Cyclic Vomiting Syndrome CVS is a childhood disorder characterized by bouts of vomiting that last from a few hours to several days. http://www.niddk.nih.gov/health/digest/pubs/cvs/cvs.htm
Cyclic Vomiting Syndrome Association- USA/Canada Provides support, information and latest medical research about CVS, abdominal migraine, nausea, vomiting, and the International CVS Center. http://www.cvsaonline.org