I am 2 months from eighteen years olds have had Cyclic vomiting syndrome since age eight and suspected before that as well. Cyclic vomiting syndrome is syndrome in which the sufferer vomits frequently episodes can last from 1 hour to 10 plus days. Causes horrible abominable pain, Nausea, vomiting, malnutrition, dehydration and more. Cvs is believed to be related to migraines. Cvs is not intentional whereas Bulimia is i.e. Cvs sufferers do not stick there hand down their throat and try to cause vomiting to lose weight. It is not a mental illness. I am sorry you sorry from rsd I have had it for nine it is horrible. I am sorry you had bulimia i am sure that must be horrible andd hard to treat i hope you are having a low pain day today.