For the purposes of this discussion we consider the term cyclic vomiting synonymous with the terms periodic vomiting, recurrent vomiting and acetonemic vomiting, the last term being preferred by French pediatricians. The condition begins in early childhood and usually terminates with puberty or earlier. It is characterized by repeated attacks of vomiting which occur at regular or irregular intervals of a few weeks or a few months and are sometimes accompanied by fever, headache and abdominal pain. According to Marfan,1 it was first described by Gruère, in 1840. The attacks are resistant to any form of treatment but usually disappear spontaneously in the course of several days. A few cases in which the outcome was fatal have been reported, with negative observations at necropsy.
The consensus among pediatricians, with whom we are in complete agreement, is that cyclic vomiting is not a specific disease entity but is a symptom