I think this is what might be happening in PSSD.
You take SSRI, this increases serotonin, serotonin increases NADPH oxidase. this creates tons of ROS. this is why to increase serotonin you need to increase thyroid and metabolism and not take SSRIs. In slow metabolism there is no ceruloplasmin and low serotonin. Doctors give people SSRIs which is ridiculous forcing serotonin in the wrong body chemistry. Serotonin rises with potassium. and thyroid. And this causes ACTH release. which increases cortisol release in FAST metabolism. People that take SSRI in slow metabolism should never take them they should just increase the metabolism. And if you force serotonin in slow metabolism unfortunately metabolism goes even lower since serotonin will increase ACTH and this will increase cortisol and cortisol willl be getting rid of potassium IN SLOW METABOLISM which should never be the case., NADPH oxidase is activated by cortisol , and this causes ROS, but ceruloplasmin is not there since ceruloplasmin goes up only in fast metabolism and you forced cortisol in the slow oxidation with SSRI. Cortisol should be up only if you have tons of potassium in the cell and fast metabolism. . If you would have lifted metabolism , then this metabolism lift would have increased NADPH oxidase but at the same time would increase ceruloplasmin and the extra ROS would have been blocked by SODS But copper cant rise in the cell with low potassium which you caused with SSRI.
This is why feeding thyroid with copper deficiency is VERY VERY BAD. since ROS will be unopposed. And in copper deficiency you get high RT3.
So end effect of taking SSRI in slow metabolism is copper loss and potassium loss at the same time. Since serotonin activated ACTH which increased cortisol and this cortisol lost all your potassium. Thus you have high progesterone .
This is why it is so tricky, metabolism is already low so when you feed copper you feel bad, and if you feed potassium you get more ROS since raising metabolism creates ROS.
This is why you need to feed copper and potassium in a certain manner, copper always should come with electrolytes and associated aminos.
Fibrosis will be gone on its own. if you lower g6pd and using GHK-CU will totally reverse it.
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Copper is what lowers enzyme G6PD and increases insulin.
Numbness that people are experiencing after SSRI, is from Gaba blocking NDMA signaling, Since from NDMA you get supersensitivity. People even have a disease like that-- tactile supersensitivity .