title: Encephalitis lethargica.
mesh_terms: D003937:Diagnosis, Differential; D004671:Encephalitis, Arbovirus / Q000150:complications / Q000175:diagnosis* / Q000523:psychology; D006801:Humans; D009886:Ophthalmoplegia / Q000209:etiology; D010301:Parkinson Disease, Postencephalitic / Q000209:etiology