This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Drug of choice for idiopathic intracranial hypeension 
Select and explain. 
A. Acetazolamide, B. Glycerol, C. Mannitol, D. Dexamethasone
A: Acetazolamide
Answer: A: Acetazolamide 
Explanation: Idiopathic intracranial hypeension is treated with acetazolamide. It should not be given in first trimester, in rest of the peroids it is safe. This condition worsens during pregnancy due to weight gain. Reference : Harrison20th edition pg 2334