We found out a few days ago that daughter has started using amphetamines. We confronted her, and she of course doesn't think it's a problem. Her therapist said very correctly that amphetamines suppress appetite and are very appealing for anorexics (especially extremely impulsive ones like daughter). She lives at home right now, and told her that she can't stay here if she continues using. She went ballistic, threatening suicide, and we called 911. ER released her with referral to an outpatient program (she already attends one 3 days a week although she started slacking).Right now she is staying with loser boyfriend who is unemployed after getting kicked out of military. I am tired. We've been through a lot with her since she was 12. She's spent a year at a therapeutic boarding school, several psychiatric hospitalizations and inpatient stays in eating disorders units, camps, psychiatrists, and what not. We've never kicked her out, mostly because we are afraid her eating disorder will get worse. Has anyone had children with bipolar/eating disorders who have developed substance abuse issues? How did you deal with the complex interactions between all these issues? What do we do now?