You shouldn’t compare psychological disorder to organic disease. There is a reason they’re called “disorder” and not “disease”.

Organic disease have a very specific definition and very specifics criteria, so you can actually have a formal diagnosis process. It’s epistemologically impossible to do so for psychological disorder, which have more broad definitions based completely over statistical norms.

P.s. while this is a very important distinction, this doesn’t mean that psychological health is less important or that is not important to seek help and therapy for psychological suffering.