Anti‑ma2 receptor encephalitis mimicking Huntington chorea

Anti‑ma2 receptor encephalitis is an immune‑mediated disorder of brain presenting with movement disorders such as chorea, dyskinesia, loss of consciousness, language dysfunction, seizures, psychosis, and autonomic instability. This disorder includes a wide range of neuropsychiatric manifestations which overlap with presentations of many other neurological diseases. For instance, choreiform movements and psychiatric symptoms in anti‑ma2 receptor encephalitis could be similar to Huntington disease, and hence the possibility of misdiagnosis should be considered before treatment.