The prognosis of cyclical vomiting syndrome

Aims-The medium term prognosis of cyclical vomiting syndrome (CVS) was stud ied to determine the proportion of affected individuals who had gone on to develop headaches fulfilling the International Headache Society criteria fo r migraine. Methods-Twenty six (76%) of 34 CVS sufferers identified from the authors' c linical records were traced, and all agreed to participate. Each child was matched to a control, and telephone interviews were conducted using a stand ardised questionnaire. Results-Thirteen (50%) of the subjects had continuing CVS and/or migraine h eadaches while the remainder were currently asymptomatic. The prevalence of past or present migraine headaches in subjects (46%) was significantly hig her than in the control population (12%). Conclusion-Results support the concept that CVS is closely related to migra ine.