Catatonic symptoms such as motoric immobility (e.g., catalepsy, cerea flexibilitas), extreme agitation, extreme negativism (e.g., rigidity of posture), and peculiarities of voluntary movement (e.g., inappropriate or bizarre posturing, stereotyped movements, prominent mannerisms) occur because of a general medical condition. This diagnosis emphasizes that catatonic symptoms are not confined to schizophrenic disorders.