How do you generally diagnose cyclic vomiting syndrome?

Vomiting cycles.: Cyclic vomiting syndrome (cvs) gets its name from the pattern of vomiting experienced by patients suffering from this condition. Cvs is characterized by 1-2 days of frequent intense vomiting, followed by several weeks with no symptoms. This is in contrast to "chronic" vomiting, where a patient experiences nausea and vomiting almost daily, 1-2 times a day. Diagnosis is by a patient's history.

Cyclic Vomiting: The diagnosis, by the consensus from those who are studying this disorder, included two or more episodes of severe nausea and persistent vomiting or retching, lasting less than an hour to multiple days. There is a return to usual state of health between episodes hat last from weeks to many month. There are many causes and many medical treatments as well.