label: Anti-NMDA Receptor Encephalitis
label_lc: anti-nmda receptor encephalitis
description: "An autoimmune acute encephalitis caused by antibodies against the glutamate NMDA receptor.  It usually affects females and in the majority of cases it is associated with the presence of a tumor, most commonly an ovarian teratoma.  The presence of a tumor in patients with this form of encephalitis implies that the latter is a paraneoplastic syndrome.  It is manifested with psychiatric symptoms and epileptic seizures.  It is a potentially lethal disorder; however, it is usually reversible with the prompt removal of the tumor."