Abstract. Catatonia is an important part of contemporary psychiatry. Nosological affiliation of this dis¬order is a matter of debate. Two modern classifications, ICD-11 and DSM-5, changed and reconsidered the concept of catatonia as a subtype of schizophrenia. It is included not only among the group of schizophrenia subtypes, but also in other categories. Catatonia prevalence correlates positively with some infectious diseases. As a condition, it could be also related to some affective and organic mental disorders, as well as to some intoxications.
Key words: catatonia, schizophrenia, ICD-11, DSM-5

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