You're welcome! What BTDT mentioned, seems likely, then. I hope things go well/get sorted out. You may be quite a bit, more knowledgable than me, so, forgive me if I sound like Im teach you, or similar, as it's not my intension. : )) in case it is helpful to know, if it's a personality related matter, your idea to suggest a certain type of therapy for his difficulties seems reasonable, as the brain develops, well into a person''s early to mid 20's. Thus, there is hope to relieve at least, some of his discomfort/dis-ease, no matter where/what it stems from, exactly. I agree with you, that some of his behaviours are unusual for PDD-NOS, although, not impossible. I wish him/all of you, a most successful outcome. He is fortunate to have you in his life, as it is apparent you care about him/ his well-being.