1 MCQs in Dermatology for NEET PG
A 64-year-old outdoor worker presents with a 4-month history of a painful, firm nodule on the apex of his right helix. The pain is severe and sharp, characteristically provoked by sleeping on the affected side. Examination reveals a 4–5 mm dome-shaped, erythematous nodule with central hyperkeratosis and exquisite tenderness. Skin biopsy confirms chondrodermatitis nodularis helicis with cartilage degeneration and fibrinoid necrosis. Conservative management with topical antibiotics and analgesics has failed over 6 weeks. The structure marked **A** in the diagram represents the definitive management approach for this patient. Which of the following best describes why this approach is curative in CNH?
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