Background: The recreational use of psychoactive substances has become quite popular nowadays, yet there a sufficient body of data about psychotic disorders associated with toxicity of these substances is still lacking. The purpose of this article is description of the psychotic disorders among individuals checking into the Admissions Department in one of the psychiatric hospitals in Bielsko-Biała during a period of seven years. Material and methods: A retrospective analysis of cases attended to by the Emergency Department of the Psychiatric Hospital, admitted to the Psychiatric Ward in Bielsko-Biała, and diagnosed with mental and behavioural disorders due to drug use and use of other psychoactive substances between January 2010 and December 2016. The exclusion criterion was prior or concurrent diagnosis of psychotic disorders secondary to a psychiatric condition. For the data analysis, descriptive statistics was used. For the statistical calculations, a freeware spreadsheet software was used. Results: During the period covered by the study there were 5,769 hospitalisations in total, out of which 156 were cases of psychotic disorders induced by the use of psychoactive substances. An average patient was a 26-year-old man, with lower education, unemployed, and single. Alcohol co-ingestion was reported in almost one-third of the cases. As regards the mental state, the most frequently reported symptoms were: delusions (63.5%), hallucinations (50%), suicidal thoughts (14.1%) and considerable psychomotor agitation (31.4%). In 60.2% of cases, aggressive behaviour was reported. Conclusions: Most hospitalisations were connected with symptoms such as delusions and hallucinations. The patients’ aggressive behaviour posing danger to others was the major problem. The substance used by the patients often remained unidentified.