What are the causes and symptoms of catatonia?
The causes of catatonia are largely unknown although research indicates that brain structure and function are altered in this condition. While this and other information point to a physical cause, none has yet been proven. A variety of medical conditions also may lead to catatonia including head trauma, cerebrovascular disease, encephalitis, and certain metabolic disorders. NMS is an adverse side effect of certain antipsychotic drugs. A variety of symptoms are associated with catatonia. Among the more common are echopraxia (imitation of the gestures of others) and echolalia (parrot-like repetition of words spoken by others). Other signs and symptoms include violence directed toward him/herself, the assumption of inappropriate posture, selective mutism, negativism, facial grimaces, and animal-like noises. Catatonic stupor is marked by immobility and a behavior known as cerea flexibilitas (waxy flexibility) in which the individual can be made to assume bizarre (and sometimes painful) pos
