I believe my son has schizophrenia, and his symptoms get much much worse when he smokes weed or drinks alcohol, but he refuses to believe us when we tell him this and he refuses to stop and just lies about it. Lately he is getting more and more self destructive and I am very scared he will end up really hurt or worse. I feel so torn but I feel that having him committed is my only avenue as he will not get help on his own and I can not force him as he is 20 years old. Please tell me what I can do!