Parkinsonism due to isolated substantia nigra involvement in probable Japanese encephalitis

Parkinsonism due to an isolated lesion of the substantia nigra following a febrile illness is a rare entity. Anecdotal reports in the literature implicate substantia nigra as peculiarly susceptible to flaviviruses. Here we report a case of isolated substantia nigra involvement in a probable Japanese encephalitis patient who presented with post-encephalitic parkinsonism