Which patient groups have the highest prevalence of cyclic vomiting syndrome (CVS)?

Updated: Oct 31, 2018
  • Author: Thangam Venkatesan, MD; Chief Editor: Carmen Cuffari, MD  more...
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The median age at onset is 4.8 years; however, CVS has been observed in infants as young as 6 days and in adults as old as 73 years. [1] The typical interval from onset of symptoms to diagnosis is 2.7 years. [1] In adults, the average age of onset is 21 years and the average age of evaluation for recurrent vomiting 34 years. [8] Females show a slight predominance over males (female-to-male ratio, 57:43). CVS occurs in all races but seems to affect whites disproportionately.

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