A Case of Biopharmaceutical-Induced Catatonia and the Implication of a Novel Mechanism.

Catatonia can be described structurally as a motor dysregulation syndrome with a concomitant behavioral component. However, despite its initial recognition nearly 150 years ago, the exact pathophysiological causes underlying this syndrome are still somewhat unknown and are potentially variable. This report reviews a case of a patient with multiple catatonic episodes precipitated by the use of an immunomodulator medication, and in doing so suggests a possible mechanism speaking to the immune system's role in the etiology of some cases of catatonia.