[A less known cause of incoercible vomiting].

Cannabis is a widely spread drug which chronic abuse may cause diverse adverse effects on the body, in the short and long term. Among these effects, we can cite digestive disorders, mainly characterized by the onset of cyclical vomiting illness. Vomiting symptoms can be temporarily relieved by hot water showers. As a matter of fact, many patients adopt a compulsive bathing behavior characterized by the irrepressible need of having showers or baths at a high temperature. We describe the case of two patients (22 and 23 years-old) who consume cannabis on a regular basis. They were admitted several times to hospital emergency rooms for complaints about uncontrollable vomiting with recurring abdominal pain. Multiple investigations and hospitalizations did not determine a precise diagnosis explaining the symptomatology. The final diagnosis is the vomiting syndrome caused by the consumption of cannabis.