question: Q:A 22-year-old man presents to the emergency department with a 2-day history of fever and altered mentation. He reports fever without chills and rigors and denies sore throat, abdominal pain, headache, loose stool, burning micturition, or seizures. He has a history of tics and is currently on a low dose of haloperidol. At the hospital, his temperature is 39.6°C (103.2°F); the blood pressure is 126/66 mm Hg, and the pulse is 116/min. He is profusely sweating and generalized rigidity is present. He is confused and disoriented. He is able to move all his limbs. Normal deep tendon reflexes are present with bilateral downgoing plantar responses. A brain MRI is unremarkable. Urine toxicology is negative. The white blood cell count is 14,700/mm3. Creatine kinase is 5600 U/L. Lumbar puncture is performed and cerebrospinal fluid (CSF) studies show:
  CSF opening pressure 22 cm H20
  CSF white blood cells 4 cells/mm3
  CSF red blood cells 0 cells/mm3
  CSF glucose 64 mg/dL
  CSF protein 48 mg/dL
  Serum glucose 96 mg/dL
  What is the most likely diagnosis?? 
  {'A': 'Acute disseminated encephalomyelitis', 'B': 'Cerebral venous sinus thrombosis', 'C': 'Encephalitis', 'D': 'Meningitis', 'E': 'Neuroleptic malignant syndrome'},