[Chronic recurrent meningoencephalitis simulating limbic encephalitis]

We report on a woman patient who since 1976 has suffered eight episodes of a meningoencephalitis with features of limbic encephalitis. The duration of the individual episodes has varied from 3 weeks to 2 months. Each time recovery has always been complete. Despite numerous cultural and serological examinations of blood and cerebral spinal fluid (CSF), no infectious agent has been detected. The etiology and entity of this illness are still unclear. To our knowledge such a clinical course has never been reported.