Catatonia in the emergency department.

The catatonic syndrome has a wide differential diagnosis that includes both psychiatric and organic disorders. We present the cases of two patients with catatonia seen acutely in the emergency department. In these cases, the striking clinical picture proved to be secondary to psychiatric disturbances, and were accompanied by dementia in the second patient. The examining physicians were confused by the presentations, and the correct diagnosis and disposition were delayed. The clinical presentation of the catatonic complex, its differential diagnosis, and the pertinent physical signs are discussed.