This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
Pegvisomant is approved for the treatment of? 
Select and explain. 
A. Parkinsonism, B. Hyperprolactinemia, C. Amenorrhoea, D. Acromegaly
D: Acromegaly
Answer: D: Acromegaly 
Explanation: Pegvisomant is a mutant growth hormone. It is used for the treatment of acromegaly caused by small pituitary adenoma. Ref: Sharma and Sharma 2nd e/pg 547