Delusional Parasitosis in a Patient with an Infarction in the Territory of the Right Posterior Cerebral Artery.

An age 80 male visited our clinic because of falling tendency, memory impairment, and delusional parasitosis complaining about lice in his clothes. He changed his clothes several times daily and sometimes sprayed insecticide on his clothes. His symptoms had begun one year ago, after an ischemic stroke in the territory of the right posterior cerebral artery (Fig. 1). He had been treated with hypertension and with no history of depression.