It seems that PAS and PSSD share many of the same symptoms. I've seen on several forums, that many blame the 5HT1A receptor for PSSD. As the auto-receptor version of 5HT1A becomes desensitised due to SSRI use, which persists after stopping the SSRI. As a result there is an excess of 5HT1A signalling post-synaptically. Predominantly in the raphe nucleus which leads to a suppression of dopaminergic activity/function.
Interestingly, the only major study I could find that has looked into accutane and serotonin, showed that accutane increased 5HT synthesis, increased SERT expression and increased expression of 5HT1A receptors in a rat cell line. Note that this cell line only expressed this receptor type, so its possible that accutane also increases expression of other 5HT receptors.
Given this, is it possible that PAS is caused by the same underlying mechanism of PSSD. As if 5HT1A expression is increased to such an extent that persists after treatment, we may have an excessive amount of post synaptic 5HT1A activity leading to a reduced dopaminergic activity. Unfortunately no 5HT1A antagonists are on the market but these would be well worth trying.
@Ghost You seem like the person to ask:
1. Have you found that most people with PSSD also have symptoms such as depression, anhedonia, loss of motivation, emotional blunting?
2. Have I interpreted this info correctly or am I wrong? Can you see how increased 5HT1A expression from accutane could lead to PSSD like symptoms?
3. Has there been any explanation on your forum as to why dopamine agonists aren't very effective for treating PSSD? They don't seem to work much in PAS. Does the 5HT system have such a strong effect on the dopamine system, that it can inhibit/negate the effect of dopamine agonists on dopamine activity.
If any PAS people have experience with SSRI's or tried anything like inositol? or any of the substances which have helped PSSD people, please let me know
Interestingly, the only major study I could find that has looked into accutane and serotonin, showed that accutane increased 5HT synthesis, increased SERT expression and increased expression of 5HT1A receptors in a rat cell line. Note that this cell line only expressed this receptor type, so its possible that accutane also increases expression of other 5HT receptors.
Given this, is it possible that PAS is caused by the same underlying mechanism of PSSD. As if 5HT1A expression is increased to such an extent that persists after treatment, we may have an excessive amount of post synaptic 5HT1A activity leading to a reduced dopaminergic activity. Unfortunately no 5HT1A antagonists are on the market but these would be well worth trying.
@Ghost You seem like the person to ask:
1. Have you found that most people with PSSD also have symptoms such as depression, anhedonia, loss of motivation, emotional blunting?
2. Have I interpreted this info correctly or am I wrong? Can you see how increased 5HT1A expression from accutane could lead to PSSD like symptoms?
3. Has there been any explanation on your forum as to why dopamine agonists aren't very effective for treating PSSD? They don't seem to work much in PAS. Does the 5HT system have such a strong effect on the dopamine system, that it can inhibit/negate the effect of dopamine agonists on dopamine activity.
If any PAS people have experience with SSRI's or tried anything like inositol? or any of the substances which have helped PSSD people, please let me know