Hi and welcome to NT!

This is a long shot, but have you ever suffered a head injury? A lot of the things you described (depersonalization, lack of inhibition, lack of volition, OCED, oddities in speech and vision) can happen after a traumatic brain injury (tbi).

If you can't recall an injury, ask your Mom about falls you might have had as a young child.

If you can put up with any more tests, perhaps you should consider a neuro-psychological exam to see how your brain is actually functioning.

Good Luck and Hang in There