Cyclic vomiting syndrome (CVS) is a disorder in which a child has continuous cycle of symptoms that involve periods of extreme nausea, followed by rapid vomiting. They then experience a period of recovery, followed by a period of normal health with no symptoms. The cycle then begins again, and happens over and over.
Some medical researchers believe that CVS is a type of abdominal migraine. CVS most often happens in young children; however, it can occur at any age.
The stages of CVS are categorized as:
There is no known cause of CVS, however, the most common triggers of episodes include:
There is no cure for CVS.
American Board of Pediatrics/Gastroenterology