Thanks everyone for your responses.  I do think my son doesn’t handle stress well at all - either physical or mental.  He also has trouble dealing with people so he may be good as a writer, which he does well.  But that is stressful too.

He does suffer from depression which is hard since he doesn’t get out of the house much.  He is home for school vacation and I can’t get him to do anything.  He watches TV, eats, sleeps and not much more.  I know this isn’t healthy and I tell him but he doesn’t do much to help himself.  I am taking him to his therapist now too.  The other problem is he doesn’t drive.  He never got his driving license - it was too stressful and never got the hang of driving.

I need to read more of the responses and will reply again.  But thanks all for your encouragement!  As his mother, I feel so helpless!