unusual voluntary movements, postures and grimacing; repetition of words or phrases. People can be extremely withdrawn and motionless, then extremely excited, pacing, talking, shouting incoherently. They can be dangerous if their behaviour becomes impulsive and frenzied.

A subtype of schizophrenia whose primary symptoms alternate between stuporous immobility and excited agitation.

a type of schizophrenia marked by unusual motor behavior, such as bizarre actions, extreme agitation, or immobile stupor. 503

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

A subcategory of schizophrenia. Its main symptoms are peculiar motor patterns, such as periods in which the patient is immobile and maintains strange positions for hours on end.

A marked disturbance in physical activities. This can be a long period of staying very still in a strange position, being mute, or exhibiting uncontrolled excitement.

(kat-a-ton-ik skiz-o-fre-ne-ah): Schizophrenia characterized by marked disturbance which may involve stiffness, a refusal to do what is asked, excitement, or behavior which is intended to draw attention to oneself.