This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors of Nervous System, Subject name: Medicine
Pseudotumor cerebri is caused by - 
Select and explain. 
A. Acetazolamide, B. Vitamin A overdose, C. Methotrexate overdose, D. Excessive iron therapy
B: Vitamin A overdose
Answer: B: Vitamin A overdose 
Explanation: Ans. is 'b' i.e.. Vitamin A overdose Pseudotumor cerebri is a benign self-limiting disorder with a favorable outcomeIt is characterized by elevated intracranial pressure (intracranial hypertension ) witho Normal or small sized ventricular system o No focal neurological signso Papilledema (enlarged blind spot in visual fluid).Isotope brain scan, CT and MRI are normalo Normal CSF findingso EEG shows excessive slow-wave activity Causes includeo High doses of vitamin Ao Outdated Tetracyclineo Quinoloneso Withdrawal of corticosteriod therapyo Addison's diseaseo SLEo Hypoparathyroidism