IntroductionDesigner drugs, as a term, first came about in the 1980s. Most of these “designer drugs” have synthetic cannabinoids and other psychoactive formulas difficulty to detect.ObjectivesA 28 year man was referred to the hospital.MethodsCT brain and EEG were also normal.Results Among 7 days before attending the hospital the patient had a strange behaviour. He was staying like in changed reality. The day before admission he got irritable in the evening was reporting that he could hear animal’s imperative voices “we together with squirrel, dolphin visited giraffe, that someone told to jump from the window”. That symptoms were temporary after that he was shocked when realized that he was in a room. The patient has the history of marihuana use in the past 5 years, periodically. There is no evidence data about the usage of other narcotic substances. On examination he was alert, sitting on a same place looking at one point, sometimes trying to find something or suddenly standing and trying to go somewhere. He has a change of catatonic stupor and excitement. The psychomotor activity was changeable. While observing the patient during few days several times he disrobed all his clothes, staying or laying on a bed or suddenly freezing in one pose.ConclusionsTaking into account clinical symptoms, the patient developed, the conclusion was made about connection of patients’ oneiroid catatonia with the usage of “Spice” or “Designer drug”. Thus, designer drugs may sound like a safer alternative, but often can lead to serious mental disturbances.DisclosureNo significant relationships.