However, one of the prime symptoms
of adhd is acting without thinking (which the correct dose
of medication can really help). And,
of course, anxiety can cause all kinds of unusual eating habits.
So I think that you need to spend your time researching adhd (I can help with this) and working with your school. Then once you/he have gotten a bit of control over those issues....you can start looking at the other things. I hope this helps.