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: Surgery
[{'content': "All of the following are TRUE regarding erythrocyanosis frigida, EXCEPT: \nSelect and explain. \nA. Seen exclusively in alcoholic males, B. Occurs in the lower third of leg on leg or ankle, C. Causes Bazin's ulcer, D. Sympathectomy may be beneficial in some patients", 'role': 'user'}, {'content': "Answer: A \nExplanation: Erythrocyanosis frigid occurs exclusively in young females. Usually these people are obese with thick ankles and large amounts of subcutaneous fat. The etiology is believed to be ischemia of the area involved due to spasm of branches of posterior tibial and peroneal aeries. The vessels are abnormally sensitive hot and cold weather as in Raynaud's disease. The non healing ulcers formed due to the ischemia are called Bazin's ulcer. Ref: Manpal Millennium Edition, Page 52", 'role': 'assistant'}]