Anti-N-Methyl-D-Aspartate Receptor Encephalitis in HIV Infection

Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a rare condition characterized by emotional and behavioral disturbances, dyskinesias, and extrapyramidal signs. It occurs in young women of reproductive age and is classically described as a paraneoplastic phenomenon. We present a 36-year-old, HIV-positive female who was admitted to the hospital in an acute confusional state, with a stiff posture, periods of motor agitation, and myoclonic jerks of the hands. Her mental state progressively deteriorated. Without evidence of infection, the presence of anti-NMDAR antibodies both in serum and cerebrospinal fluid clinched the diagnosis of autoimmune encephalitis. No evidence of neoplastic disease was found, and the beneficial response to immunosuppressive therapy was exceptional. This is the first report of anti-NMDAR encephalitis in an HIV-infected individual, reminding us that autoimmune encephalitis should be included in the differential diagnosis of a young patient presenting in an acute confusional state.

Abstract licence: CC BY-NC

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