catatonic schizophrenia, catatonic type schizophrenia, catatonia - a form of schizophrenia characterized by a tendency to remain in a fixed stuporous state for long periods; the catatonia may give way to short periods of extreme excitement

tonicity, tonus, tone - the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli; "the doctor tested my tonicity"

dementia praecox, schizophrenia, schizophrenic disorder, schizophrenic psychosis - any of several psychotic disorders characterized by distortions of reality and disturbances of thought and language and withdrawal from social contact

catatonia - extreme tonus; muscular rigidity; a common symptom in catatonic schizophrenia