Source : WordNet®

catatonia
     n 1: extreme tonus; muscular rigidity; a common symptom in
          catatonic schizophrenia
     2: 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 [syn: {catatonic schizophrenia}, {catatonic
        type schizophrenia}]