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: Pathology
[{'content': 'Coup-de Sabre is commonly associated with: \nSelect and explain. \nA. Scleroderma, B. Pemphigus, C. Systemic sclerosis, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Systemic sclerosis\nOccasionally, the lesions occur as linear bands or ribbons on the face, particularly the forehead, on the chest\xa0and trunk or on an extremity. This has been termed linear scleroderma. Such a band, made up of a furrow with an elevated ridge on one side, is often termed a coup de sabre, since it resembles the mark produced by the blow of a sabre.\xa0The circumscribed lesions eventually become stiff and hard. It has been reported that facial hemiatrophy is associated with this form of the disease occurring in children.\xa0The lesions are generally asymptomatic, although pricking,\xa0tingling and itching sensations have been described.\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 563,564', 'role': 'assistant'}]