A young girl 13 yrs presented to us with abnormal behaviour and altered sensorium. After brief history of fever 5 days. H/O fever 15 days back also admitted with CT scan normal CSF has 7 lymphocytes with raised protein and sugar 60 mg.. CBC normal..

Girl has become delirious and irritable since 2 days.. No improvement already given anti tb px..IV dexona IV mannitol inj antibiotics. What could be the etiolgy and further in which can help?