Cyclic vomiting syndrome

Abstract

Cyclic vomiting syndrome (CVS) is characterized by stereotypical episodes of intense vomiting separated by periods where the individual feels completely well. There is a strong link between CVS and migraine headaches, with many overlapping symptoms and similarities in treatment. There are consensus criteria for CVS diagnosis, but there is no specific diagnostic test, and there is often a delay in diagnosis resulting in a high degree of morbidity. Recognizing the CVS vomiting pattern can facilitate earlier diagnosis and treatment, which can greatly improve the quality of life for CVS patients.