Stage 1: more than one adequate trial of 1 major class of antidepressants
Stage 2: Failure of more than 2 adequate trials of two different classes of antidepressants
Stage 3: stage 2 + TCA
Stage 4: Stage 3 + MAOI
Stage 5: Stage 4 + bilateral ECT
With every medication or neuromodulation procedure used that doesn’t work, the more treatment resistant the depression becomes.
Antidepressant Response Rates
Frist Medication Trial: 50% respond and 37% have remission
Second Medication Trial: Another 29% respond and 31% have remission
Third Medication Trial: 17% respond and 14% have remission
Fourth Medication Trial: 16% respond and 13% have remission
The overall cumulative remission rates are 67%, keeping in mind that people who progressed through more treatment stages had higher relapse rates and more residual symptoms including anhedonia, emotional blunting, and lack of motivation.
If someone is having a poor response to medication, what do you do?
We know that bipolar disorder is missed in a significant number of patients who present with depression about one in five will be misdiagnosed. We also know that antidepressants can be mood destabilizing in bipolar illness resulting in mixed features and rapid cycling. Other things that can interfere with response include substance use disorder, personality traits, and PTSD.
Medical Comorbidities that can interfere with antidepressant response include hypothyroidism, Cushing disease, Parkinson’s disease, cancer, vitamin/nutritional deficiencies, and viral infections
Psychosocial factors that contribute to treatment resistance
-Female sex
-Older Age
-Single Unmarried (happiness studies indicate that good relationships are very important)
-Unemployment
Symptoms that make TRD more Likely
-Recurrent episodes usually 3 or more
-Severe depression and inpatient admission
-Anxiety, Insomnia, or Migraine
When Your First Choice Fails
There are several approaches
-Switch antidepressant classes
-Combine antidepressants
-Add a dopamine blocking medication
-Add L-methylfolate
-Add Psychotherapy
-Start Neuromodulation
What’s the most effective strategy
Hands down the most effective thing to do if a patient has a poor response to the initial antidepressant treatment is to add a dopamine blocking medication. Response and remission rates are much higher, but it comes at the price of increased side effect potential.
What are the most used Dopamine Blockers in Antidepressant Augmentation
-Quetiapine
-Olanzapine
-Risperidone
-Aripiprazole
-Ziprasidone
Older patients 65 years and older respond better to aripiprazole augmentation than switch to bupropion, or combination with bupropion.
Brexpiprazole: 1-3 mg/day Adjunctive for Depression
Most Common Concerns patients have about being on dopamine Blocking Medication
-Weight gain 60% of people report this concern
-Metabolic side effects
-EPS
-Sedation
-Akathisia
-Prolactin-related Effects
Anti-Inflammatory Medications
For those with elevated inflammatory biomarkers specifically c-reactive protein there is some emerging evidence that these treatments work.
-Medications like Celecoxib, Omega-3 fatty acids, statin drugs and minocycline
-Weight loss
-Effect Size: 0.55
-Higher response and remission rates
-May only work in those with high inflammatory biomarkers
Glutamate Modulators
-Ketamine Infusions and Esketamine: both work and a reasonable option if TRD
-There are several medications in development
Psychotherapy in TRD
Unfortunately, what we find with TRD is psychotherapy does not prevent TRD, it doesn’t mean there is no benefit it just means future episodes will not be prevented by psychotherapy. On its own, psychotherapy may not be as helpful as we would like in TRD but when combined with medication it does help. That tells us about the importance of evaluating severity of depressive episode.
When Someone does not experience remission from major depression, we need to ask ourselves why, and come up with new solutions. This discussion will focus on the treatment of these individuals by first explaining what symptoms predict poor response to treatment and what symptoms of major depression result in the most psychosocial dysfunction.
What Causes Functional Impairment in Major Depression
From the STAR*D study we know that only 50% of patients respond to the first antidepressant treatment and only 33% achieve remission. An important question is why, or more specifically what factors result in poor outcomes.
Contrary to popular belief the medications we use to treat depression work well for some neurovegetative symptoms. Symptoms such as sleep, and appetite improve but the most debilitating symptoms often remain. Consistently Anhedonia and concentration are rated by patients with depression as the most debilitating. These cognitive symptoms such as trouble concentrating, difficulty planning, and poor attention lead to dysfunction at home and work.
Cognitive Symptoms Impair Work Performance
We all need to work to live, and depression is a leading cause of disability and poor work performance worldwide. What we know is that subjective measures of cognitive dysfunction are a better predictor of workplace performance than total depression severity. Someone with more severe overall depression scores may perform better at work than someone with perceived cognitive dysfunction from depression. This is one possible reason for a lack of improvement as many treatments do not address cognitive symptoms.
Anhedonia makes everything Worse
Possibly the most debilitating symptom of depression is anhedonia. Anhedonia is defined as loss of interest in previously pleasurable activities. A strong predictor of poor antidepressant outcome is the loss of interest. Making anhedonia a primary target of treatment would be wise if we want to improve outcomes in depression.
We have additional evidence that indicates how important anhedonia is for psychosocial function. Functional improvement is strongly associated with improvement in anhedonia. The improvement in anhedonia had a larger effect on psychosocial function than overall symptomatic response.
Emotional Blunting Effects on Treatment Outcomes
While people do not want to be depressed, they also do not want to be emotionally dull. Unfortunately, we know that emotional blunting is reported in nearly half of all depressed patients on antidepressants. This appears to be common to all monoamine antidepressants with bupropion having the lowest reported risk. Emotional blunting cannot be totally accounted for as just a side effect of treatment, it’s also a symptom of depression. However, the point remains the same emotional blunting results in poorer quality of remission.
Doctors Are Too Medically Oriented
The world of psychiatry is very different from other medical specialties. Psychiatry is really art based in science and if you try to approach mental health treatment from a strictly scientific basis you will never help anyone. When patients and physicians are asked to rank the symptoms of depression, they believe are most important, the lists do not match up.
Patients focus on restoration of positive affect by ranking things such as meaning and purpose in life, enjoyment in life, satisfaction with oneself as the top three most important things to address in depression. Clearly what should stand out to you here is that medication is unlikely to improve any of these factors.
Doctors rank depressed mood, hopelessness, and anhedonia as their top three symptoms to address. These symptoms are far better addressed by medication than the ones listed by patients although you could argue that hopelessness and anhedonia are difficult to treat with medication.
The effect of Loneliness on Health Outcomes
I’ve talked about this before and it continues to be a major concern in our modern world. We are the most connected we have ever been as a society with the advent of social media and the internet, yet no one feels connected. This is an existential crisis for all of us and I haven’t heard many good solutions. Time and time again we go back to the same things such as the internet and social media to feel connected and they continue to let us down. Not only is this emotionally taxing, but it’s also effecting our physical health as well. Here is yet another example of something that is very important for depression treatment outcomes that medication cannot fix.
Conclusion
What does this all mean? Should we stop attempting to use medication for the symptoms of depression? For me these findings indicate we need to screen more carefully for these specific symptoms that result in poor outcomes. We need to improve our psychosocial treatments to help people address ways to enhancing meaning and purpose in their lives. We need to recognize the limitations of medications. Medications have a place and do address some of the symptoms associated with depression, they just aren’t the ones patients believe are most important in their lives.
Recently Jonah Hill celebrated the gift of therapy with his Netflix documentary ‘Stutz’ which chronicles his journey through therapy and his friendship with Phil Stutz co-author of The Tools. This film was intended to highlight the benefits of psychotherapy and celebrate the teachings of Dr. Stutz. Personally, I think the documentary was low on practical advice for the average person, but it did highlight one very important factor that affects therapy outcomes. That will be the topic of today’s video, can we have a therapist who is also our friend?
Therapeutic Alliance and Why It’s so Important
This documentary raises many questions for someone who has been in both roles as therapist and patient. Time and time again we see that the most important factor in psychotherapy outcomes is the strength of the therapeutic alliance. The therapeutic alliance is a working relationship between the patient and their therapist that allows them to work together on established goals of therapy.
To me this comes down to how much do you like, trust, and feel comfortable opening up to the therapist. When we like someone and feel-good talking to them, we feel better regardless of what type of therapeutic techniques they use. Research has suggested that the quality of this relationship is a reliable predictor of positive clinical outcomes independent of the psychotherapy approach used. I remember in training hearing many of my psychotherapy preceptors make similar statements. Jonah Hill did a wonderful job of demonstrating the power of this alliance throughout the film. For me this was the big takeaway, considering Stutz is not a traditional psychotherapist.
Having a Therapist as Your Friend
I do not believe it’s ever a good idea to become friends with a patient. There are reasons we do not accepts gifts from patients, hangout with them outside of the assigned appointment times, or have romantic relationships. These to me are boundary crossings which will interfere with the work. Yes, in the case of this film it all worked out fine, at least that’s what they want you to believe. It did not appear that Hill had fully come to terms with his past, or unstable self image. He still seemed vulnerable and is possibly worse off as he’s come to depend on the relationship with Stutz for relief.
The goal of any good therapist should to teach our patients to become their own therapist. To use and apply the skills learned in the work of therapy, not to come for some friendly advice or a chat like old college buddies. The therapist is there to help guide the work in a warm empathetic way that allows the patient to take control of their life.
What Makes Stutz a Good Therapist?
It’s very difficult to make a blanket statement about how good Stutz is as a therapist. For Hill, he helped him process some very difficult work including making peace with his brother’s untimely death and working on self-esteem and body image. Stutz is honest, warm, and empathetic during his encounters. He knows how to push sensitive buttons in a playful manner and can establish a strong therapeutic alliance. These are things any aspiring psychotherapist can and should learn to use.
Some Things That Are Not So Good
When you start psychotherapy with any patient you must establish a therapeutic framework where the work of psychotherapy will be carried out. While I believe there is a loose framework established in the film it doesn’t appear to be well developed. This opens the door for boundary crossing which you as the therapist might not be aware is occurring because the frame is so weak. He also relies on self-developed Tools that aren’t validated by scientific evidence and appears at times as an authority figure giving out life advice. Advice can be useful in supportive psychotherapy, but most patients will not follow advice alone. Is this entirely bad? No, but it might not work for most patients unless you share the same feelings for the therapist as Hill does.
Therapist Reputation and Outcomes
Sometimes a therapist will develop a reputation as being “good.” Clearly, in celebrity circles Stutz has that reputation. When a new patient comes there is a belief that this therapist has access to special knowledge or skills that cannot be had any other way is already established. I do not think the tools as presented in the book/film are groundbreaking or things people have not heard before. In the film Stutz words are seen as absolute truth and there is full buy in from Hill which is probably why he felt better. While his tools are developed from his clinical practice, they are not validated scientifically. In place of science, we have a charismatic therapist asking for full faith in a program with no scientific validity. For some this approach clearly works, but it’s not because the tools are any better than other techniques used in psychotherapy.
Final Thoughts
I really Like Stutz and I do believe there are people that would benefit from his approach to therapy. However, the main benefit would not come from the tools he teaches because they are largely similar to other techniques and not scientifically validated. What you would benefit from in this brand of therapy is a warm, emphatic, and charismatic listener with some good advice if you’re willing to take it. After all, maybe that is really where the magic of therapy comes from anyway.
There has been a lot of news recently about Sam Bankman, the onetime billionaire turned supervillain. At its peak, his company FTX had an in-house performance coach and psychiatrist named George K. Lerner. It’s unclear how many FTX employees Dr. Lerner treated but he did admit to treating some for ADHD and stated “the rate of ADHD at FTX was in line with most tech companies” whatever that means. I’m not here to debate the practices of the good doctor, but Bankman was known to talk publicly about experimenting with focus-enhancing medications. The main medications he allegedly used to become limitless were stimulants such as Adderall and the more interesting one to me and the topic of this week’s video the selegiline patch.
We are going to discuss selegiline in depth and try to understand why a medication primarily used to treat Parkinson’s may be useful for enhancing focus, creativity, and productivity in the fast-paced world of cryptocurrency.
What is Selegiline?
Although many may not have heard of this medication, it’s actually a very old concept in psychiatry. A common “pimping” question in psychiatry residency is what was the first antidepressant medication? Most residents will say it was the tricyclic antidepressants which isn’t a bad guess but it’s not correct. The correct answer is the monoamine oxidase inhibitors (MAOIs) specifically iproniazid a failed treatment for tuberculosis. In 1952 researcher noted that patients receiving this medication became unusually happy, this was shocking considering the medication did nothing for their tuberculosis.
Transdermal selegiline is a tissue selective MAOI (MAO-A and MAO-B inhibitor in the brain) and a relatively selective MAO-B inhibitor in the gut. This is an important point, and I will explain more about it as we move through this topic.
How Do MAOIs Work?
We are speaking about the transdermal selegiline patch here but there is also an oral version that is not approved for major depressive disorder and is a selective MAO-B inhibitor.
The transdermal patch acts in the brain as an irreversible inhibitor of both MAO-A and MAO-B which are enzymes responsible for breaking down norepinephrine, serotonin, and dopamine which in turn will boost the noradrenergic, serotonergic, and dopaminergic neurotransmission.
In lay terms this medication increases the availability of all three major neurotransmitters so that more serotonin, norepinephrine, and dopamine is available to act on post synaptic receptors affecting changes in cells and circuits involved in depression.
FDA Approvals for Selegiline
This is a little complicated because news outlets have stated the medication is only used for Parkinson’s disease which is true if we are talking about the oral tablets. The transdermal patch is FDA approved for major depressive disorder.
Off label use includes the treatment of treatment resistant depression, panic disorder, social anxiety (which MAOIs are usually superior at treating), treatment resistant anxiety, and Alzheimer’s disease.
How to Dose Selegiline
The transdermal patch comes in various doses:
6 mg/24 hours
9 mg/24 hours
12 mg/24 hours
The initial dose for depression is 6 mg/24 hours and it can be increased by 3 mg/24 hours every 2 weeks to a maximum dose of 12 mg/24 hours. Dietary modification to restrict tyramine from food sources is not required for the 6 mg/24hr patch but at higher doses the same food restrictions are required as other oral MAOIs such as phenelzine. This will be important for our next discussion on side effects.
Side Effects of Selegiline
Before starting the medication, the patient should be aware of the potential for increased blood pressure.
Notable Side effects include
Skin reactions at the site of application (the location of the patch should be rotated daily)
Headaches
Dry mouth
Diarrhea
Insomnia
Sedation
Possible weight gain
Serious side effects include:
Hypertensive Crisis
Seizure
Induction of manic episodes in bipolar disorder
Contraindications when combined with:
Meperidine
Another MAOI
SSRIs, SNRIs, TCAs, tramadol
Dextromethorphan
St. John’s wort
Methadone
History of Pheochromocytoma
Elective surgery
Proven allergy to selegiline
The Dreaded Tyramine Reaction
I believe that MAOIs might be the most effective of the antidepressants because of their ability to affect all three major neurotransmitter circuits, but they are rarely used clinically. In most residency training programs, we are not taught to use these medications. The main barrier is the dietary restrictions and risk for hypertensive crisis if the diet is not followed.
This diet should be started a week or so before staring the medication. It allows the patient time to get accustomed to the dietary recommendations before being on the medication when the stakes are higher. The diet must be followed for 2 weeks after stopping the MAOI as it can take time for the MAO enzymes to regenerate due to irreversible inhibition.
Tyramine is an amino acid that is found in some foods, and it helps to regulate blood pressure. MAOIs are responsible for breaking this amino acid down so it’s inactive and unable to causes an increase in blood pressure. When you block MAO excess tyramine will be available to affect blood pressure.
Ingestion of a high tyramine meal is generally considered to be any meal with 40 mg or more in the fasted state. For the low dose transdermal patch 6 mg/24 hours studies show that 200-400 mg of tyramine in the fasted state is required for a hypertensive response. In general, at low doses dietary modification is not required. If the dose is increased to 12 mg/24 hours than 70-100 mg of tyramine is required for a hypertensive response. Although dietary modification may not be required at higher doses, it’s safer to avoid tyramine rich foods once the selegiline dose is increased and to be cautious at lower doses as well.
Low Tyramine Diet Principles
When a patient is on an MAOI diet they should only eat things that are fresh. This goes for food that are stored as well as the storage process may affect the tyramine content. The patient should avoid foods that are beyond their expiration date and avoid fruits and vegetables that are overly ripe. Some cheeses are allowed in the diet, but all aged cheese should be avoided. The same can be said for meat products, fresh meats are fine, but aged or spoiled meats should be avoided.
Fermented products need to be avoided when MAOIs are being used. This goes for all fermented products without exception.
Chinese food and some other eastern foods should be avoided because they contain soy, shrimp paste, tofu, and soy sauces all of which are high in tyramine.
Fava and other broad beans should be avoided this includes Italian green beans.
Foods to Avoid
Matured or aged cheeses (cheddar, and blue examples)
Cheeses: cream cheese, ricotta, fresh cottage cheese, mozzarella, processed cheese slices like American cheese
Milk Products: yogurt, sour cream, and ice cream
Meat: fresh packaged or processed meat e.g. hot dogs
Beverages: coffee, tea, soda, up to a maximum of 2 drinks either 12 oz of canned or bottled beer or 4 oz of red/white wine.
Soy products: soy milk
Other foods: chocolate in moderation and monosodium glutamate in moderation
Onset of Action
The therapeutic effect is usually not immediate and still requires 2-4 weeks or longer once an adequate dose is reached.
Augmentation
For expert psychopharmacologist Only:
You may consider a stimulant such as d-amphetamine, or methylphenidate while watching for increased blood pressure, suicidal ideation, and activation of bipolar disorder)
Lithium
Seconded generation dopamine blocking medication
Mood stabilizing anticonvulsant
Advantages to using MAOIs
May be effective in treatment resistant depression
May improve atypical depressive symptoms such as hypersomnia and hyperphagia
Lower risk for weight gain and sexual side effects
Why Would Selegiline Improve Cognitive function?
Selegiline will increase dopamine and more dopamine in the prefrontal cortex theoretically will enhance cognitive function. A lot of the research on MAOIs and cognitive enhancement come from studies in neurodegenerative disorders such as Alzheimer’s disease. While promising as reported in several articles it does not appear that proper randomized controlled trials were ever conducted. If you watch my videos than you should know the risk of assuming that something that should theoretically work will also work clinically. This is the story of many medications in psychiatry. We also cannot extrapolate that to healthy individuals who do not have neurodegenerative disorders.
Selegiline is metabolized to l-amphetamine, and l-methamphetamine which are well known stimulants that may improve symptoms of attention deficit hyperactivity disorder (ADHD). Again, this is theoretical and has never been proven but based on the metabolism of the medication it makes sense that it may enhance cognition in those with ADHD or even healthy individuals.
People often forget that depression itself is a major reason for cognitive problems. Depression in elderly patients is sometimes referred to as pseudodementia because it can look like the individuals has substantial cognitive deficits in severe cases. It’s possible that the improvement in depressive symptoms is responsible for the enhanced cognitive function.
Conclusion
I think this is a good discussion because it highlights an often-forgotten class of medication in modern psychiatry that can be utilized for patients who have failed other medication options. Many psychiatrists are untrained or too scared to use these medications clinically. As far as cognitive enhancement and finding that limitless pill, I do not think this is it. While it may theoretically improve cognitive function it’s never been proven in randomized controlled trials. I would say the evidence supporting this idea is weak and may even be dangerous given the risk for hypertensive crisis.
As many might know there is a new Netflix documentary called Take Your Pills: Xanax and it combines interview footage from physicians, patients, and journalists about anxiety and the use of Xanax. For the most part I thought there were a lot of reasonable discussions about anxiety, its treatment, and the role of medication. I feel like this is an appropriate way to cap off our recent discussions about anxiety disorders and treatment.
Fear and Anxiety: Are They the Same Thing?
The documentary made it seem like anxiety and fear are the same thing and that the exact same neurobiology is involved in each case. I think about anxiety and fear as two separate things that require different approaches.
Anxiety is what an individual feels when they are worried about something that could potentially happen in the future. If you watched my other videos on generalized anxiety disorder (GAD) then you know the Diagnostic and statistical manual (DSM) has made excessive worry the hallmark of GAD.
Fear is a core emotion along with sadness, anger, joy, excitement, and disgust. It’s different than anxiety, which is a fear of some future event happening. Fear is triggered in the moment. When you see that bear walking on the hiking trail or hear the rattle of a snake the fear centers of our brain are activated immediately in that moment. It’s not that we are obsessing about some future outcome, there is something present in the environment that is threatening and demands immediate action.
The Fear Center of The Brain
In humans the fear center of the brain is called the amygdala which stands for almond and that’s because they taste like almonds. No, wait that isn’t right, it’s because they are shaped like an almond. The amygdala is what fires when you see that bear in the woods. This triggers the fight or flight response which leads to things like increase blood flow to the muscles, and increased energy. It prepares the body to run away or fight if necessary.
Benzodiazepines MOA
Benzodiazepines enhance GABA activity by acting as allosteric modulators of the GABA-A receptors. This is the major inhibitory neurotransmitter in the body, and it acts to dampen everything down. Benzodiazepines increase the frequency of opening of chloride ion channels which in turn inhibits the cell and prevents the neuron from firing.
Anxiety Is a Part of Life
As I’ve said before we all have anxiety under certain circumstances. It’s not always a bad thing to have anxiety. In many ways anxiety reminds us that this situation is important, and we need to be appropriately prepared. A healthy amount of anxiety is a good thing overall.
Things go sideways when the anxiety is chronic, persistent, and severe. As I’ve stated in the previous videos some people are just more prone to anxiety. These individuals are high in the big 5 personality trait of neuroticism. While most of us will fall somewhere in the middle there will be outliers on either side with some having significantly less anxiety and others having significantly more.
The one thing that made this documentary hard to follow is that they combined all the anxiety disorders together, at one point they were describing panic attacks, social anxiety, and GAD as if they are all part of the same disease process. While there is significant overlap, the course of illness, and treatment plans will vary greatly which is why proper diagnosis is so important.
Xanax Works great for Physical Symptoms of Panic Attacks
When the interviewees start talking about Xanax it’s in the context of people experiencing panic attack. This is an important distinction to note as most of the symptoms of panic attacks are physical and thus will have a greater response to benzodiazepines. If we are talking about GAD, or social anxiety the anxious thoughts will still be there, and the benzodiazepine may be less effective.
Why Temperament and Environment Deserves More Attention
Much of our baseline temperament is genetic and will be part of the story that determines if you will have more or less anxiety. The other part of the story is environment. The experiences we have matter a lot too. In child psychiatry, there has been this huge focus on minimizing adverse childhood events (ACES). We discovered that things like sexual abuse, physical abuse, and loss of a parent can result in significant risk for poor health outcomes in the future. Baseline temperament that predisposes someone to anxiety combined with significant lifetime trauma could set the table for a future anxiety disorder.
The Prevalence of Benzodiazepine Use
In this documentary they make it seem like benzodiazepine prescriptions have skyrocketed over the last several decades. These prescriptions have increased but we need to explore why. One thing I see all the time is primary care providers prescribing benzodiazepines for patients early in treatment for depression and anxiety. Before exploring psychotherapy or other medication options the person walks out with a Xanax prescription. There is a reason the research tells us most people who see a primary care provider for depression and anxiety do not get better. In fact, as few as 20% of those started on antidepressants by primary care will show significant clinical improvement. This is not a knock on primary care, it’s more that they have been thrown into a mental health crisis and are usually the first person to encounter a patient with anxiety.
The important trends I would like people to pay more attention to is the risk of prescribing opioids and benzodiazepines in combination. This can result in increased risk for overdose death and a significant risk for severe respiratory depression. In addiction treatment people often feel very anxious when stopping opioids and it’s common to want to address that anxiety as a doctor. What ends up happening is people are on medication treatment for opioid use disorder, a benzodiazepine for anxiety, and gabapentin for that little extra relief. All these medications in combination put the patient at risk for adverse outcomes. Another thing to pay attention to is where all the opioid prescriptions are coming from. The highest rates are in many southern states and in places like West Virginia where the opioid epidemic hit the hardest. The final item to discuss is the increased rates of benzodiazepine prescribing in the elderly. There seems to be an increase in benzodiazepine use in this population which is more dangerous due to the risk of falls, altered mental status, and possibly dementia.
There has been a lot of talk over the years about the increased risk of dementia associated with benzodiazepine use. There data has been mixed, but I would say it’s largely in favor of using caution when prescribing benzodiazepines in older populations and avoiding the long-term use of benzodiazepines in all populations.
Social Media and Anxiety
I think social media has done as much harm as it has good for people’s mental health. If you believe everything you see on social media, the impression is everyone you know, or follow is winning, and you are losing. In the past you only had to compare your life to people in your community. Now, we get to compare our lives to the world. Not only are we comparing our lives to large pool of people, but we are also comparing them to people who have created online personas under false pretenses. These are individuals rent house for photo shoots to make you believe that is where they live, or people taking steroids then asking you to buy some supplement that does not provide the results it promises. We all like to think we are immune to these types of schemes, but we are not. In our minds we are comparing our worst moments to other people’s best moments and assuming that this is reality. This is clearly a recipe for anxiety and depression.
Dangerous Coping Strategies for Anxiety
I do not think using alcohol or drugs to alter one’s state of consciousness is exclusive to the past. People have been doing this forever, and it remains a poor way to cope with anxiety. I think one of our problems is attempting to cure the stresses of life. In my practice I do not believe that taking a medication or using alcohol are ways to “cure” anxiety. Most individuals need to take a long hard look at their life and see where the anxiety is coming from and where life changes can be implemented to reduce the tension. When someone takes time to systematically dissect the cause of their anxiety, they often already know what they should do. Take more time off work, practice better self-care, exercise, eat healthy, and sleep better these examples all come to mind for most patients. Most people feel trapped and do not believe they can carve out the time to do these things and that is part of the reason they turn to medication or drugs/alcohol to cope.
While I still believe benzodiazepines can be useful in the right context, they are designed to be used short term. I set limits with my patients early in the process letting them know up front that we are not using this as a long-term solution for their anxiety.
Potential Side Effects of Benzodiazepine use
They did a nice job of describing the changes in memory that occur because of benzodiazepine use. The ability to laydown new memories is impaired when using benzodiazepines that is why I caution anyone with PTSD who is in trauma-based psychotherapy to avoid the use of benzodiazepines. They also focused on the disinhibition caused by increased GABA-A activity. This is less a side effect and more a response that should be expected from the medication. Most individuals with anxiety are wound too tight and have trouble relaxing. The problem with this response occurs when that disinhibition is excessive resulting in embarrassment or inability to work for example.
Withdrawal from these medications can be deadly. There is risk for seizure, rebound anxiety, rebound insomnia all of which can be very distressing. The problem with benzodiazepine withdrawal is the variability in terms of patient’s tolerance to dose reductions. Some patients can tapper off very quickly and have no issue, others need to be tapered slowly over months to years. While I would say it’s rare to have someone who is very sensitive to dose adjustments it can happen and tapering slowly while watching for withdrawal symptoms is important. The example of the guy pipetting a liquid microdose of alprazolam would not be a normal situation, and if you just watch this documentary, you may think everyone who tries to come off these medications must go through a similar process. Benzodiazepines can be safely reduced under the guidance of doctor.
Conclusion
What we see in the end is more of the same recommendations most of my patients would tell “doc I already know this.” They talked about using complementary and alternative medicine which I am a big fan of, diet, exercise, mindfulness, and psychotherapy to find the underlying causes of the excessive worry. They introduce the idea at the end that the world is broken and defective and we should not have to accept the world as it is. This is fine but significant change on a massive scale takes time and it still leaves people asking the question “what do I do right now.” I’m personally active in advocacy work at the local and state level, which is one approach, but it takes a lot of time and resources to affect policy changes and not every patient will have the time or desire to engage in such activities. The only true way out of anxiety is through it. Daily life is painful, and we need to accept that to some degree. Medicating away feelings that are part of life is certainly not the solution and can be the reason we find ourselves in trouble.
In the first part of this series, we discussed anxiety and specifically generalized anxiety disorder (GAD) as a diagnosis. Now we are going to look at the research associated with the treatment of GAD and let the research inform our decision making about what works when a person presents with GAD. Some of these findings may surprise you.
SSRIs
Although the effect size of SSRIs in GAD is small, 0.33 they remain the recommended first line option for treatment. It’s also important to confirm that someone has had an adequate trial of SSRI treatment before assuming it’s not effective. The choice of which SSRI will depend on the side effect profile and other patient factors such as presence of insomnia, substance use, or pregnancy. Escitalopram is a good place to start, fluoxetine, or sertraline can be alternative options. Although paroxetine has the FDA approval for GAD it has more side effects like weight gain and sedation, along with several other factors that make this medication a poor first-line option. If the first medication trial is ineffective it’s reasonable to try a second SSRI or switch to the SNRI duloxetine.
When SSRIs Don’t Work
The next step in many cases is to try a medication from a different class. Two SNRIs have been well studied in GAD, venlafaxine, and duloxetine. Venlafaxine is not considered a first line choice due to the side effect profile and the small increase in efficacy. From the meta-analysis on anxiety treatments the effect size is 0.36 slightly better than the SSRIs but it would likely be undetectable clinically. Duloxetine is slightly better with respect to side effects and can be a good choice if you chose to use an SNRI for anxiety treatment. It has the added benefit of lower risk for sexual side effects compared to venlafaxine and possibly improved cognition.
Bupropion in Anxiety Disorders
There is some evidence for the use of bupropion in GAD. In one study small study of 25 participants bupropion beat the SSRI escitalopram head-to-head. Other lines of evidence include more improvement in GAD when bupropion was added as a combination treatment with SSRIs compared to adding buspirone. For clarification the effect size of buspirone in GAD is 0.17 which would be unlikely to produce any observable clinical improvement in anxiety symptoms. I largely stay away from buspirone unless it’s used to treat sexual side effects of SSRIs. Bupropion may be good option for patients who do not want the side effect profile of an SSRI. Although we lack the large RCTs for bupropion in GAD there is some evidence to support its use. The negative studies indicating bupropion worsened symptoms of anxiety come from studies in panic disorder where bupropion was found to worsen panic symptoms.
What About New Antidepressants?
Vortioxetine had a lot of hype when it first came out, and many believed it would work for GAD. Unfortunately, like many medications when we believe something should theoretically work based on the mechanism of action, we are sadly disappointed. This is one of those cases. The effect size was found to be 0.12 and it did not even cross into the small range. This medication performed worse than buspirone for GAD.
Vilazodone also had one positive study published for GAD. Again, based on the MOA it should work just fine, it has typical SSRI like effects in addition to 5-HT1A effects like buspirone, you should get the best of both worlds theoretically. This one positive study was followed by two distinctly negative studies and a calculated effect size of 0.26 which is considered small.
Both were not submitted for FDA approval for GAD based on the negative results.
The Hydroxyzine Argument
Hydroxyzine is an antihistamine that’s been out for a long time. As I stated earlier it has approval for tension associated with psychoneurosis which is the old psychanalytic way of describing anxiety. It’s often seen as ineffective, but the effect size was higher than SSRIs and SNRIs for the treatment of GAD. Hydroxyzine had an effect size of 0.45, and we may want to reconsider the use of this medication. Some limitations are the size of the studies and duration of the studies, but this still provides a fair amount of evidence that hydroxyzine may perform better than we think.
Quetiapine Surprised Me
Quetiapine is an antipsychotic medication usually not considered as a treatment option for anxiety disorders. However, the effect size was large with a range from 1.0 to 2.2. To put this in perspective this medication outperformed SSRIs, SNRIs, and benzodiazepines. Why did it not gain FDA approval? If you watched my other videos, you should know that the side effect profile is difficult to tolerate. Metabolic side effects and sedation are common, and the FDA does not view anxiety disorders as significant enough to warrant this degree of risk. One place where this medication may be very useful is in bipolar disorder with severe anxiety. We avoid antidepressants in this population at all costs, quetiapine offers a good option with strong evidence and strong antidepressant effects in bipolar depression.
Where this fits in clinical practice for me is as a 3rd or 4th line option after all other avenues have been explored except for bipolar disorder as stated above. The antipsychotic medications have been known to have a positive effect on anxiety, but the limitation remains side effects.
Anxiety as a less Severe Form of Psychiatric Illness
According to the FDA medications like aripiprazole and quetiapine are reasonable adjunctive therapies for patients with major depression that does not respond to first line treatment options. This is not their view for anxiety disorders that respond poorly to first line options. When we look at disability caused by depression and anxiety there isn’t much difference in the odds of being disabled for depression vs anxiety (3.5 Vs 3.1). For whatever reason we continue to view anxiety as less significant although DSM does not identify a clear diagnostic hierarchy.
Things like psychotherapy are often recommended as first line options. In the 1980’s when GAD was first conceived, it was thought to be a mild disorder where psychotherapy is the most effective treatment. In fact, psychotherapy did well it had an effect size of 0.5 which is nearly the same as benzodiazepines. Psychotherapy is a good place to start for anyone presenting with an anxiety disorder. I’m also a big believer of combining psychotherapy and medication for anxiety disorders.
What about Benzos?
Benzodiazepines can have all sorts of effects on the body. Largely we think of the benefits of benzodiazepines in anxiety disorders as having a major effect on the physical symptoms of anxiety and not so much on the chronic worry that characterizes the disorder. Many of the effects of benzodiazepines would not be measured by traditional anxiety rating scales based on the updated conception of GAD. Nevertheless, Benzodiazepines had an effect size of 0.4-0.5 which falls into the moderate range for GAD.
A final Option to Consider
Silexan the proprietary extract of Lavender oil has good evidence and a large effect size when used to treat GAD. In Germany there is a respect for the power of natural products, and they are regulated and prescribed in the same manner as pharmaceutical drugs. When silexan was studied in GAD the effect size can range from 0.5 to 0.9. This is a large effect size and I have another video that covers Silexan in detail if you are interested. This can be added to most medication regimens without significant drug interactions and has even been shown to decrease the use of benzodiazepines in those who are using them for GAD. It can be purchased under the brand Name Calm Aid for around $30 per month, and if you are wondering I get no financial compensation for saying this I’m just presenting the evidence.
Conclusion
We covered a lot here today and I think one of the most important points to stress is the importance of finding the underlying cause of anxiety symptoms. I believe anxiety is driven by other underlying factors as discussed at the beginning of the video. There are many reasons to be anxious and all require a different approach. Without this clarification the patient is likely to continue struggling. Another important point is theoretical mechanism of action that should work, do not always work as seen in the case of vilazodone. We also had some surprises, hydroxyzine, and silexan performed very well but traditional first line options such as SSRI and SNRIs were not so great. I hope this discussion was helpful and if you want more content on anxiety disorders, let me know below in the comments section.
Anxiety is pervasive in the world today. All of us including me know what it’s like to be anxious. We have all read recent articles about how the COVID-19 pandemic increased anxiety around the world, and this has placed a lot of focus on anxiety as a psychiatric diagnosis. Anxiety in my opinion is not an independent disease the way the diagnostic and statistical manual (DSM) would lead you to believe. Anxiety is a symptom that has various potential causes and that’s what we are here to talk about today.
This is inspired by a real case where I needed to do a deep drive into the literature to understand the root of anxiety and its treatments. I hope you guys enjoy the topic.
Introduction
Generalized Anxiety disorder has been revised significantly over the years by the DSM. It seems like no one knowns what GAD is, or if it’s an independent disease state. The DSM only provides descriptive criteria and does not comment on the underlying cause of anxiety. Prior DSM criteria from DSM III focused more heavily on autonomic and motor symptoms of anxiety. In these editions, what is now GAD was referred to as psychoneurosis an old Freudian term that fell out of favor as we moved away from psychoanalysis. Interesting fact, if you look up the indication for hydroxyzine in anxiety it still states “for tension associated with psychoneurosis.” The more recent updates in DSM have stepped away from these physical symptoms and focused more on the mental state of chronic and excessive worry. If we attempt to apply older studies on anxiety treatment to the current DSM criteria, they may not be valid.
What I want to stress, is worrying is the core symptom of GAD now with at least 3 out of 6 of the following:
-Restlessness
-Being easily fatigued
-Difficulty concentrating
-Irritability
-Muscle tension
-Sleep disturbance include insomnia
When I look at the criteria, they look a lot like depression to me. I often argue to my residents and medical students that it’s hard to separate depression and anxiety, but they usually disagree, so this video is for them as well.
Causes of Anxiety
We should try and figure out what the potential underlying causes are for anxiety. Since the DSM does not guide us here, we need to think through each possible cause.
Personality: people often underestimate the importance of personality traits in psychiatry. One personality trait that is part of the “big 5” is neuroticism. We all have anxiety as a personality trait, some individuals have more some have less, but for the most part there is a normal distribution in the population. If you have more, you tend to get diagnosed as having a “anxiety disorder.” Most people fall in the middle we have some anxiety under specific circumstances but not enough for it to be identified as pathology.
Depression: As I stated before there is a lot of overlap in the criteria for depression and generalized anxiety disorder. In fact, the same medications are used to treat both disorders. Depression can clearly be a cause of anxiety.
Mania: people often mistakenly believe that people in manic states are having fun and love being that way. This is not true, and anxiety can be one of the potential symptoms associated with manic states.
Psychosis: Schizophrenia or schizoaffective disorder can be anxiety provoking disorders
PTSD: Excessive worry can be a part of PTSD
Eating Disorders
Substance Use Disorders
OCD
Other environmental factors can cause anxiety independent of those listed above: life stages, divorce, death of a loved one, diagnosis of severe physical illness, significant loss of physical function from an injury
The point here is there are many things that could result in a state of high anxiety. What you should start to see here is once we rule out all these causes for anxiety there would be no way to diagnose an independent anxiety disorder.
Just describing the symptoms of anxiety checking the boxes for the criteria and labeling someone as having “anxiety disorder” does not have much meaning. We have to say what the underlying cause of the anxiety is to treat the symptoms effectively.
Myths About Medication in Anxiety Disorders
People often believe that anxiety responds faster to medication than depression. This is not true the response to medication takes the same amount of time for both anxiety and depression. This provides another layer of evidence that GAD can be driven by depressed states. Trials of medications such as SSRIs can last several weeks as doses are titrated until the individual has an acceptable level of response to the medication.
There is also no established dose dependent response in GAD. Some believe that GAD responds better to higher doses of SSRIs, say 40 mg of escitalopram. This has not been established in the research literature. This may also indicate that the underlying cause is OCD which traditionally requires higher doses and longer duration of treatment.
Many people presenting with anxiety will be started on an SSRI. In the past paroxetine was favored by primary care because it had the FDA indication for use in anxiety disorders. I never think paroxetine is the correct choice for anxiety due to the side effect profile which includes risk for withdrawal and harm during pregnancy. Citalopram has suffered a similar fate as dose dependent QTc prolongation limits the doses we can use in clinical practice. Escitalopram can prolong QTc at higher dose above the approved maximum but there is significantly less risk at standard doses.
How effective are these medications for anxiety disorders? Not very, a meta-analysis found that SSRIs have an effect size of 0.33 falling into the low range.
Part Two:
Part two of this series will be coming soon. I had way too much to say about the diagnosis of GAD that I didn’t leave any time to discuss treatment. Part two will included a detailed analysis of medications for GAD.
Gabapentin is approved by the FDA for three specific indications to prevent and control partial seizures, relieve nerve pain following shingles (post herpetic neuralgia), and to treat moderate to severe restless leg syndrome. Unfortunately, less than 1% of the prescriptions written for gabapentin are for the above listed FDA approvals. In fact, much of the off-label prescribing of gabapentin is done for the treatment of psychiatric and substance use disorders.
We were first alerted to the misleading marketing practices when Pfizer paid a $2.3 billion dollar fine for misleading clinicians through their marketing campaigns. Gabapentin is often thought of as a benign medication that can address symptoms in several common disorders including migraine, chronic pain, fibromyalgia, opioid use disorder, anxiety, and mood disorders. There is now mounting evidence that this medication is not as safe as people once assumed yet many of these prescribing practices continue despite a lack of quality data. Today we will review the safety and efficacy of gabapentin in psychiatric disorders.
How Does Gabapentin Work?
Gabapentin functions by binding to the alpha-2-delta subunit of voltage gated calcium channels theoretically offering antipain, anticonvulsant, and anxiolytic properties. Although it’s structurally related to the GABA neurotransmitter, there is no direct interaction at GABA A or B receptors.
Why is there such an increase in Gabapentin prescribing?
In the United States the opioid epidemic drove much of the 64% increase in gabapentin prescriptions 2012 to 2016 as policy makers searched for safer alternatives for pain management. Although lacking any data for the treatment of chronic pain, gabapentin was elevated into this role because of several factors cost, non-controlled status at the federal level, evidence in neuropathic pain, and benign side effect profile.
However, the risk for gabapentin abuse became apparent as more prescriptions were written. The risk of adverse effects was prevalent when combined with other CNS depressants such as opioids, the exact thing gabapentin set out replace. Approximately 15%-22% of people with an existing substance use disorder abuse gabapentin. Those who overused gabapentin were found to be at increased risk of all-cause or drug-related hospital stay and emergency visits for altered mental status and respiratory depression.
The off-label prescribing of gabapentin comes with risk.
Evidence For Use in Anxiety Disorders
The evidence for gabapentin’s use in anxiety disorders comes from only two industry sponsored studies with a total of 172 participants. These are relatively small but well-designed studies that provide limited evidence for the use of gabapentin in anxiety disorders. The first study was in 1999 and looked at the use of gabapentin in social anxiety disorder. 69 participants were randomized to placebo or gabapentin 900-3600 mg/day for 14 weeks. A significant reduction in social anxiety was observed over the 14 weeks and the conclusion was more studies were needed to confirm the results. The other study looked at panic disorder with the same study design and doses of gabapentin, only this time the study lasted 8 weeks. The results indicated gabapentin was effective for severe panic disorder. One thing we notice is neither of these studies focused on generalized anxiety disorder. These results have not been replicated in other studies.
There is far more evidence for the use of pregabalin in anxiety disorders. In Europe it does have regulatory approval for generalized anxiety disorder.
Evidence For Use in Bipolar Disorder
I’m going to burst this bubble and maybe a few other bubbles up front. While some believe all anticonvulsants are “mood stabilizers” they are wrong. Gabapentin has never proven in RCTs to treat mania or any other aspect of bipolar disorder. Likewise, Topiramate and oxcarbazepine have performed poorly in studies assessing their efficacy in bipolar disorder. Simply put, if you are on any of the three medications as primary mood stabilizers it’s best to consider other options such as lithium.
Evidence For Use In Alcohol and Cannabis Use Disorder
While addiction treatment is part of the reason we are in this mess with gabapentin, it does have a role in alcohol use disorder (AUD) and cannabis use disorder. The APA added gabapentin as a second line option for AUD because patients who take it for this indication report fewer heavy drinking days with an effect size in the moderate range. There is also some indication that sleep quality improves with gabapentin when patients are cutting back or stopping alcohol use. Alcohol is known to worsen sleep with more frequent nighttime awakenings. The dose range is 300-3600 mg/day in divided doses with many using an average of 900 mg/day.
Gabapentin is sometimes used for alcohol withdrawal in place of benzodiazepines or phenobarbital. There were a few seizures in the gabapentin groups raising some questions about its use in severe alcohol withdrawal. It’s probably best left for those with less severe dependence.
Typical Taper for Alcohol Withdrawal
-Start with 1200-2400 mg/day in three divided doses
-Taper to 600 mg/day over the course or 4-7 days watching for objective signs of alcohol withdrawal and have Ativan available should a seizure develop.
-Taper by 300 mg/day over the next 2-3 days until the medication is completely off.
In cannabis use disorder there is limitted data. A single study showed improvement in withdrawal symptoms, reduced cannabis use, and improved executive function but this is not enough to recommend gabapentin on a regular basis in clinical practice.
It’s important to note gabapentin failed in controlled trials for cocaine, methamphetamine, benzodiazepine, and opioid use disorder. It’s dangerous to combine gabapentin and opioids as discussed earlier in the video.
A Quick Note on Gabapentin for Chronic back pain
There are 8 total studies including a systematic review and meta-analysis to assess pain relief in patients with chronic lower back pain a reason many patients tell me they are taking gabapentin for. When you pool this data together, gabapentin demonstrated minimal improvement in pain compared to placebo and had an increase in adverse effects including dizziness, fatigue, and visual disturbances.
Adverse Effects
The most common side effects include sedation, fatigue, dizziness, imbalance, tremor, and visual changes.
Dosing
Gabapentin has a short half-life of 6 hours and will need to be dosed three times per day. The kinetics of gabapentin are not linear which means levels in the blood do not rise consistently. For a 900 mg dose, only 540 mg is absorbed. This has to do with the transporters responsible for gabapentin absorption becoming over saturated limiting the amount of medication absorbed.
Conclusion
While there are very good reasons to consider the use of gabapentin many of the common reasons cited in clinical practice lack the appropriate evidence to support using the medication. It’s best to stick with FDA approved indications and if you are prescribing it off-label consider only using it for the disorders with the most evidence in my opinion that is alcohol use disorder when other treatments have failed.
There is no hotter topic in the world of psychiatry than the reemergence of psychedelics as therapeutic tools for the treatment of mental illness. When esketamine was approved by the FDA in March of 2019 it opened the doors for medications like MDMA, psilocybin, and mescaline as possible therapeutic agents.
I’m excited about these new options for therapy but I also want to make sure the science backs up the personal experiences of individuals who use these medicines in uncontrolled settings.
Introduction:
The psychedelic era was a time of social, musical, and artistic change influenced by the use of psychedelic drugs that occurred between the mid-1960s and mid-1970s. Although this era lasted for some time it largely fell out of favor for legal reasons and wasn’t a topic in modern psychiatric training until just recently. It seems like overnight there are New York times articles, Netflix documentaries, and evening news coverage about psychedelics.
What’s the story are we ready to prescribe everyone psilocybin and MDMA as a form of mental health treatment?
History of Hallucinogens in Medicine
For over 5 millennia humans have been attempting to alter their state of consciousness. Some have argued it goes even further back to primate ancestors who consumed large quantities of ripe fermented fruit to alter their state of consciousness (drunken monkey hypothesis). I’m not sure how correct this theory is but it’s safe to say psychedelics have been around for a long time.
In 1943 Albert Hofmann a chemist by training, invented LSD by accident. He started the research in 1938 and announced that he sampled the chemical in 1943. Not only did he synthesize it, but he was getting high on his own supply. In 1957 this same chemist isolated psilocybin from the hallucinogenic mushrooms.
In the 1940’s LSD was marketed as a drug to assist psychotherapy, the so-called drug assisted psychotherapy which is making a comeback today. Unfortunately, of the 1000 studies published looking at psychedelics as a model for psychosis and as therapy were small and uncontrolled.
In the 1970’s most of these medicines were placed into schedule I status making it exceedingly difficult to study the medicines further for therapeutic effects in a controlled setting. A Randomized controlled trial is considered by many to be the highest standard of scientific evidence.
Classes of Hallucinogens
For years people thought of psychedelics as LSD or psilocybin, the term now includes other medicines. The term psychedelic is derived from two Greek words meaning mind manifesting. Essentially psychedelic and hallucinogen are being used interchangeably these days but do have separate meanings.
Maybe the best studied area is in end of life and palliative care settings.
Mechanism of Action
-The primary mechanism of action is 5-HT2A receptor stimulation
-5-HT2A is the most abundant serotonin receptor in the central nervous system and cortex of the brain.
-Stimulating the 5-HT2A receptors will increase the release of glutamate in the cortex
-Stimulation of 5-HT2A receptors in the visual cortex can lead to visual hallucinations. Stimulation in the ventral tegmental area can produce a situation like that of schizophrenia with delusions and hallucinations.
-Most atypical antipsychotics bind to and block 5-HT2A receptors and would mitigate the effects of psychedelics
Neurobiology
People often make comments like we don’t know how much serotonin is enough, then conclude that medications do work or the therapies we are using are invalid. That’s because they are thinking about mental illness and these medications too simply. Most psychiatrists do not believe in or talk about the chemical imbalance theory of treating mental illness. We think about mental illness and problems with neural circuits, nodes, and networks. What medications including the psychedelics achieve is an alteration in the connectivity of these networks and the ability to form new connections.
We have a default mode network which is famously active when a person is not focused on the outside world and the brain is just daydreaming. What psychedelics do is decrease brain connectivity in this default mode network followed by the establishment of new connections.
Hypothetically this rewiring of the brain allows for the replacement of faulty connections resulting in mental illness and the formation of new healthy connections through psychotherapy provided during treatment. This may be why the antidepressant effects last far beyond other interventions with less frequent dosing.
There are identifiable changes in network connectivity that coincide with subjective improvement.
The Mystical Experience: Is Tripping Required for a Therapeutic Effect
-There is a mystical experience questionnaire that has been validated and used in these studies. It seems that the more profound the mystical experience the better the treatment effect subjectively
-While the spiritual experience many individuals have while taking these medicines is profound and meaningful to the individual, we are not sure that having a “trip” is required to produce a therapeutic effect.
Side Effects of Psychedelic Use
While some may claim there are no adverse effects from plant-based medicine that is not true.
Things like increased blood pressure, berating rate, and body temperature have been reported.
-Loss of appetite, dry mouth, sleep disturbance, uncoordinated movements, panic, paranoia, psychosis, and bizarre behaviors
Long-Term Effects:
Persistent Psychosis: A series of continuing mental problems including
-Recurrences of certain drug experiences such as hallucinations or visual disturbances
-These experiences often happen without warning and may occur within days of last use or even years after taking the drug
-These experiences can be mistaken for neurological disorders such as strokes or brain tumors.
Conclusion
At this time what we can say about the current state of psychedelics in psychiatry is they are under investigation. We do not know yet if they are safe and effective for treatment of mental illness on a mass scale. We have some encouraging evidence but there is an absence of large randomized controlled trials proving efficacy and safety. Psychedelics are not ready for clinical practice and should not be recommended as a treatment for mental illness until the proper studies have been conducted.
Many medications that work as so-called antidepressants will increase serotonin by blocking the reuptake pump. In general, we think of increased serotonin in a patient with depression as a good thing, but what happens when increased serotonin goes bad?
That is what we are here to talk about today, what happen when there is too much serotonin in the central nervous system?
Being prescribed too many serotonergic medications can result in Serotonin Syndrome which can range from mild to severe and is potentially fatal. It can present with muscle rigidity, hyperthermia, and altered mental status.
When someone has increased muscle tone, and elevated temperature with no other explanation, it’s time to look at their medication list. Medications can increase serotonin release, block reuptake, or directly activate serotonin receptors. Common examples include linezolid, Fentanyl, and dextromethorphan.
Watching from drug interactions like CYP 450 inhibitors can increase medication levels resulting in serotonin syndrome. Whenever a new medication is prescribed consider doing a drug interaction check to make sure the new medication doesn’t inhibit a critical cytochrome.
Mild forms of serotonin syndrome may cause diarrhea or tremor where the more severe cases are more likely to result from a drug overdose.
Key Features of Serotonin Syndrome:
Patient is on one or more serotonergic drugs
The onset of symptoms is abrupt usually within 24 hours and symptoms peak rapidly
There is increased tone in the legs more than the arms, tremor and hyperreflexia are present
Vital signs show hypertension, hyperthermia, tachycardia, and tachypnea
Labs can show increased creatinine kinase
What is Clonus:
Involuntary, rhythmic muscle contractions.
It occurs more in the lower extremities
To induce clonus, you flex the patient’s foot upward until there is rhythmic beating of the foot and ankle. If the beating continues beyond a couple of beats, it’s abnormal
Treatment:
For mild cases discontinue serotonergic medications and check for drug interactions. Use external cooling measures and start benzodiazepines.
For moderate cases where the vital signs are worse and there is spontaneous clonus or agitation: use the same measures as above, increase the frequency and dose of the benzodiazepine, and start cyproheptadine 12 mg followed by 2 mg every 2 hours until improvement is seen followed by 8 mg every 6 hours for maintenance. Cyproheptadine is an anticholinergic, antihistamine, and anti-serotonergic medication
In severe cases, where delirium develops and there is a failure to respond to other measures, admission to the ICU and the use of paralytics with intubation and ventilation are required
