Catatonic signs in severe obsessive compulsive disorder.

Two cases of prolonged catatonic states that were part of severe obsessive compulsive disorder (OCD) are described. The catatonic symptoms failed to respond to neuroleptics but were ameliorated by conventional OCD treatments; clomipramine was used in one case, and behavior therapy in the other. Inclusion of severe OCD in the differential diagnosis of catatonia is discussed.