This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Drug used for treatment of Scorpion sting is: 
Select and explain. 
A. Adrenaline, B. Morphine, C. Captopril, D. Prazosin
D: Prazosin
Answer: D: Prazosin 
Explanation: Ref; Harrison's principles of internal medicine 18th edition (page no; 3580) keeping the patient calm and applying pressure dressing and cold packs to the sting site are measures to decrease the absorption of venom. Iv infusion of midazolam to control agitation, flailing and involuntary movements Close monitoring during treatment with this drug and other sedatives or narcotics necessary For persons with neuromuscular symptoms like Hypeension and pulmonary oedema, response to nifedipine, nitroprusside, hydralazine, prazosin is seen