Catatonia refers to a state of mental disorder in which a person seems detached from reality and oblivious to environmental stimuli and whose behavior alternates between immobility and excited agitation;

these symptoms are diagnosed as Catatonic-type schizophrenia. Catatonia also refer to a group of disorganized behaviors that reflect an extreme lack of responsiveness to the outside world; a disorder of movement involving immobility or excited agitation.

Other /More definition:
catatonia refers to disorder of movement involving immobility or excited agitation.

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