Hemichorea-hemiballismus associated with acquired immune deficiency syndrome and cerebral toxoplasmosis

A young woman had hemichorea‐hemiballismus subsequently found to be secondary to a cerebral toxoplasmosis infection complicating human immunodeficiency virus infection. This patient had the sixth reported case of acquired immune deficiency syndrome (AIDS) with hemichorea‐hemiballismus, and each has been secondary to cerebral toxoplasmosis. The presence of hemichorea‐hemiballismus in a young patient should suggest a diagnosis of AIDS and in particular the diagnosis of secondary cerebral toxoplasmosis. Other movement disorders that occur in AIDS are discussed.