A 17-year-old with a 1-week history of fever, headache, increasing confusion, and lethargy presents to the emergency room. Physical examination Normal He has no focal neurologic signs. Laboratory results CT scan of his head is negative. An LP reveals a WBC count of 250/mm 3 , with 78% lymphocytes and red blood cells (RBCs) 500/mm 3 in tube 1 and 630/mm 3 in tube 2, respectively.
No organisms are seen on Gram stain. *This case is from the Editorial team of Docplexus and is meant for educative purposes only.
