Extreme tonus; muscular rigidity; a common symptom in catatonic schizophrenia.
Severe mental disturbance marked by catalepsy.
Condition characterized by a range of abnormal movements or postures associated with mental illness. The condition may be described as excited, with constant restlessness and repetition of purposeless actions, or inhibited, with stupor, fixed posture and catalepsy. It is sometimes a feature of schizophrenia but is also seen in other disorders.