Are you familiar with the book “Natural Healing For Scizophrenia & Other Mental Disorders” by Eva Edelman? If not, it’s an excellent book. It gets into what medical / nutritional things to look for & rule out when it comes to “diagnoses”. (things like heavy metal poisoning and Celiac’s for symptoms of “schizophrenia”, for example). The allopathic/ conventional medicine approach often misses ruling certain things out. I highly recommend this book, as well as Craig Wagner’s “Onward Mental Health” website. Good luck to you & your son.