hello. my boyfriend suffers from anxiety, and had to take therapy for anger disorder. recently the past few days, almost weeks he's been having episodes where initially he feels nausea, then coughs, then the cough leads to a burning pain in his chest, which makes him cough more and more violently, his heart begins to race, sometimes he has convulsions where it looks like he is about to snap his neck, he starts vomiting violently and can not stop. he seems delerious and it causes him so much pain to the point he cries. his panic attacks have gotten so bad that he cant remember certain episodes. please help me deal with this and tell me whats wrong with him... its becoming harder and harder to deal with every day.