Brief, factual summary of the article in Slovak: The World Health Organization (WHO) deals with cannabinoid hyperemosis syndrome. It is a disease characterized by repeated episodes of severe vomiting in people who regularly use cannabis. WHO is investigating the causes, symptoms and treatment options for this syndrome. The goal is to better understand this disease and provide healthcare professionals with recommendations for the diagnosis and management of patients with cannabinoid hyperemosis. WHO wants to contribute to raising awareness about this still not fully researched health problem.