An unusual presentation of catatonia in a patient with schizoaffective disorder.

: Catatonia is currently a diagnosis that is made clinically; however, due to the varied clinical presentations of catatonia, underdiagnosis is common. We describe an unusual presentation of catatonia in a female patient with schizoaffective disorder. She was successfully treated, albeit with a significant delay. Among an extensive series of laboratory tests and treatment trials, serum levels of D-dimer were elevated during the illness and relieved with recovery.