[timr]

"Idiopathic" means that the cause is unknown. So when you say "idiopathic post-viral...from X", you're trying to imply something that cannot be implied. One may have happened after the other, but the "idiopathic" means "it's unlikely to have been caused by it".

Not for nothing: I had idiopathic hypersomnia in graduate school, too -- it tends to happen when you're depressed from being in graduate school. As you were already on an antidepressant, and it was a suggested treatment for your illness, it sounds like this is a more probable cause than the one that you're trying to imply.