The first thing I would look at are the two antidepressants your son is taking. Both Zoloft and Strattera are antidepressants and can cause or worse mood swings (both depression and mania), anxiety, aggression, hostility, violence, etc. In fact there is a version of bipolar which is caused by antidepressants. He should have never been put on an antidepressant, let alone two of them, if the doctor suspected he could have bipolar disorder.
