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: Dental
[{'content': 'Apple jelly module is seen in - \nSelect and explain. \nA. Cutaneous anaphylaxus, B. Erythroderma, C. Lupus vulgaris, D. Eiysepals', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lupus vulgaris \xa0Lupus vulgaris is a chronic and progressive form of cutaneous tuberculosis that occurs in tuberculin sensitive parents.\nIt is the most common type of cutaneous tuberculosis and has a most variable presentation. Seen in children and young adults, though no age is exempted.\nOccurs on an exposed area like face (nose, eyelid, pinna); and sometimes on the block, trunk.\n\nLesions are usually solitary and characterized by - \n\nReddish brown (erythematous).\nAnnular in shape. iii. Indurated.\nSlowly increases in size (gradually progressive).\nHealing with tissue paper like scarring at centre (most common) or edge.\nPeripheral cruising.\nBlanching with glass slide (diascopy) will reveal grey green foci → Apple jelly nodules.\nMatch-stick test positive → Apple jelly nodule has no resistance to pressure by a sharp matchstick.\n\n\nThe reappearance of new nodules within previously atrophic or scarred lesions is characteristic.\nCarlage (Ear, nose) in the affected area is progressively destroyed (Lupus vorax); bone is usually spared. Buccal, nasal and conjunctival mucosa may be involved primarily or by extension.\nTreatment is a tub', 'role': 'assistant'}]