<unk>  is characterized by high fever, sore throat, headache, lethargy, double vision, delayed physical and mental response, sleep inversion and catatonia. In severe cases, patients may enter a coma-like state (akinetic mutism). Patients may also experience abnormal eye movements ("oculogyric crises"), Parkinsonism, upper body weakness, muscular pains, tremors, neck rigidity, and behavioral changes including psychosis. Klazomania (a vocal tic) is sometimes present.
Encephalitis lethargica
Japanese encephalitis
Powassan encephalitis
Eastern equine encephalitis
Saint Louis encephalitis
Brain fever
Tick-borne encephalitis
Limbic encephalitis