The therapist says that parents of kids on drugs often get a form of posttraumatic stress syndrome made worse by the recurring nature of addiction. For soldiers back from battle, the sniper fire and bombs are in their heads. For parents of an addict, a new barrage can come at any moment. We try to guard against it. We pretend that everything is all right. But we live with a time bomb. It is debilitating to be dependent on another’s moods and decisions and actions.