he sounds like a very smart and gifted young man, I do not know how old he is now, I only see the age of you when you had him, I am asuuming in his early 20's but not sure
THis is a hard time for all people.
SOunds like he may have a small disorder, but clinical doctors should tell you waht that is,..
I would try helping him as much as you think you can, let him move back in and try to get him into computers again, since you said he used to be good at that, might give him an outlet he so dearly needs.

Talk more when you respond and tell us how it went ok.

<font color=purple>The way to love anything is to realize that it might be lost.
- G.K. Chesterton
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