Hi sueshulo,
I haven't heard that being cold is a side effect, your son could ask the pharmacist.
Some people aren't warm-blooded. Has your son always been cold, or only since starting the zyprexa and risperdal?
Another suggestion: when I was younger, I told my mother I "was cold," and maybe I was, or maybe I wanted attention and to feel protected.
I've noticed that my whole life I've tended to feel colder than most people around me. Year-round, my wrists and ankles are always colder than the rest of my body.
Being cold is not a symptom of the illness, so check with the pharmacist as to whether it's a side effect of the medications.
One consideration: as long as he's well-dressed, it should be fine for him to dress in layers year-round unless of course he looks ill-groomed and others would tend to form a false impression.
I say it's fine to dress in layers if that is what your son needs to do to feel warm or safe.
Best regards,
Chris