This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Following a routine immunisation a 9 month old child developed vomiting and drowsiness. On examination there was bulging of anterior fontanelle. Fundoscopy revealed papilledema. The child developed cranial nerve palsies within a few hours. Inspite of all these findings the child was afebrile with clear chest. What is the MOST probable diagnosis? \nSelect and explain. \nA. Meningitis, B. Sagittal sinus thrombosis, C. Vit A toxicity, D. Astrocytoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The condition described here is pseudotumor cerebri. Along with the vaccination the child may have received a bolus dose of Vit A which might have precipitated the toxicity. In meningitis the child is usually febrile. In astrocytoma the progression occurs gradually. Ref: Nelson, Edition 17, Page - 180.', 'role': 'assistant'}]