i believe a disorder is something that is out of the persons control where as intentional\on purpose is something that a person can control.

i believe intentional dissociation (purposely dissociating, dissociating with in your own control) is treated like a habit not a disorder...

think of it like smoking. a person purposely picks up a cigarette every time they are stressed out. it becomes a habit. they can choose to pick up that cigarette or not. even an addicted person can choose not to light up in places they are not supposed to light up (its with in their control) its a habit that they can if they choose to stop doing.

i believe disorders are things out of a persons control. example before I learned how to use grounding I didnt have a choice. I would one second be at my desk and the next feeling dissociated. I do not purposely set out to cause myself to feel dissociated (numb, spaced out, disconnected.) it was out of my control, it just happened to me.)

as for intentional discluding unintentional yes I know some people who have intentionally caused their problems and then got the unintended result that scared the crap of of them, but because of the unintentional result happening they have ....chosen ....not to intentionally cause their self problems again in that way.

America now has a mental disorder called fictitous disorder imposed on self for those that do choose for what ever reasons cause their self to have mental disorder symptoms. this is another new diagnosis put in place in 2013 which my location also uses when someone is intentionally causing their self to have mental disorder symptoms.

its just the way my location defines things, and the new diagnostics for mental disorders in american since 2013.

your own treatment provider can go more into detail about the new definitions\diagnostics and categories.