Recurrent infantile vomiting due to intentional ipecac poisoning.

Recurrent vomiting is a common symptom in infancy that, when severe, may prompt an extensive diagnostic evaluation. We report a 1-year-old infant whose recurrent vomiting eluded diagnosis until ipecac syrup was detected in vomitus and urine. Separation of the infant from the mother resulted in complete resolution of the symptoms. In Munchausen syndrome by proxy, a disorder in which a mother fabricates or induces illness in her child, most reported fatalities are due to intentional poisoning. In atypical cases of recurrent vomiting, early screening of body fluids for unexpected drugs, particularly ipecac, may prevent potentially fatal delays in diagnosis.