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': '18 yr female with itchy erythema, swelling of toes every winter season seen due to \nSelect and explain. \nA. Raynauds disease, B. Raynauds phenomenon, C. Chilblains, D. Frost bite', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. ChilblainsAlso known as pernio, It is an inflammatory skin condition presenting after exposure to cold as pruritic and/or painful erythematous to viloaceous acral lesions.It may be idiopathic or secondary to an underlying disease.', 'role': 'assistant'}]