[en] The authors present a review article on syndrome of cyclic vomiting that was originally known as acetonemic vomiting and is characterized by attacks of recurrent vomiting with variable frequency. Gravity of attacks is variable and cause rapid dehydration and metabolic disorder. The final diagnosis is based on a thorough history and exclusion of organic causes, so it is a diagnosis „per exclusionem“. The treatment if targeted both at the correction of consequences of acute episodes and at preventive measures. (author)