A patient comes to ED with fever and headache. On examination he has neck stiffness. CSF analysis was done:- Parameter Finding Normal range Glucose (mg/dl) 55 50-80 Protein (g/L) 0.50 0.18-0.45 ICT (cmH2O) 35 5-20 WBC 25 (predominantly lymphocytes) <5 Most likely diagnosis is-

Elevated lymphocytes with normal protein & sugar point towards viral cause- Coxsackie infection Option A- TB meningitis should have >100 finding of proteins with low sugar. Option B- Sugar normal so bact. meningitis is ruled out as in bact. meningitis there is reduced (|) sugar. Option C- No information of AIDS, CD4 count less is not mentioned in the question and there should be normal CSF so ruled out.