Psychomotor status.

Four case histories are reported, including a review of the available literature since 1956 (35 cases). Contrary to what might be inferred from the limited number of published cases, the actual prevalence of psychomotor status must be much higher, as probably many patients' conditions are mistakingly diagnosed as psychiatric. Neurologic and electroencephalographic examinations are indicated in all patients with an apparently acute psychotic behavior combined with an altered state of consciousness.