Catatonia Catatonia is a neuropsychiatric syndrome characterized by a range of motor abnormalities that can include immobility (catatonic stupor), excessive motor activity (catatonic excitement), negativism (resistance to instructions or attempts to move), mutism (lack of verbal response), rigidity, posturing, and echolalia (repetitive mimicking of speech). These symptoms may fluctuate in severity and can significantly impair […]

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