History: Lupus vulgaaris is the most common form of cutaneous tuberculosis that occurs in the tuberculin sensitive patients. It is a chronic, progressive disease and has the most variable presentation. The lesions usually are solitary, and more than 90% involve the head and neck. Small, sharply marginated, red-brown papules of gelatinous consistency slowly evolve by peripheral extension and central atrophy into large plaques. Lesions often persist for years before diagnosis and can be disfiguring. In long-standing cases, squamous cell carcinoma can occur and be confused with the disease itself.
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