Improving the diagnosis of cannabinoid hyperemesis syndrome.

Two recent publications in this journal regarding cannabinoid hyperemesis syndrome (CHS) reflect a common fact in the clinical practice. Although the syndrome is increasingly well-known, patients still receive a late diagnosis, sometimes after years of delay. This entails multiple visits to the ER, as well multiple outpatient visits and diagnostic tests in gastroenterology departments. Furthermore, there are many unnecessary hospital admissions that are often accompanied by an uncertain discharge diagnosis (psychogenic vomiting, etc.).