<Tr> <Th> Specialty </Th> <Td> Psychiatry </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> Catatonia is a state of psycho - motor immobility and behavioral abnormality manifested by stupor . It was first described in 1874 by Karl Ludwig Kahlbaum, in German: Die Katatonie oder das Spannungsirresein (Catatonia or Tension Insanity). </P> <P> Though catatonia has historically been related to schizophrenia (catatonic schizophrenia), it is now known that catatonic symptoms are nonspecific and may be observed in other mental disorders and neurological conditions . In the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM), catatonia is not recognized as a separate disorder, but is associated with psychiatric conditions such as schizophrenia (catatonic type), bipolar disorder, post-traumatic stress disorder, depression and other mental disorders, narcolepsy, as well as drug abuse or overdose (or both). It may also be seen in many medical disorders including infections (such as encephalitis), autoimmune disorders, focal neurologic lesions (including strokes), metabolic disturbances, alcohol withdrawal and abrupt or overly rapid benzodiazepine withdrawal . In the fifth edition of the DSM, it is written that a variety of medical conditions may cause catatonia, especially neurological conditions: encephalitis, cerebrovascular disease, neoplasms, head injury . Moreover, metabolic conditions: homocystinuria, diabetic ketoacidosis, hepatic encephalopathy, hypercalcaemia . </P>

​which of the following is the definition of catatonia
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