A child's CSF was examined I contains slightly raised or normal PMN cells, raised lymphocytes, absence of mycotic growth, value of protein is normal or above normal, glucose level is normal. The most probable diagnosis is____________?

Correct answer: B. Viral meningitis

  • A. Pyogenic bacterial meningitis
  • B. Viral meningitis
  • C. Fungal meningitis
  • D. Tuberculous meningitis

Explanation

A lymphocyte-predominant CSF with normal glucose and normal or mildly raised protein is typical of viral meningitis. Bacterial meningitis usually produces marked neutrophilia, high protein and reduced glucose, while tuberculosis and fungal infections commonly lower glucose substantially.

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