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What is Which of the following tuberculids is characterized by involvement of sweat glands, and hair follicles with noncaseating epithelioid granuloma ? and explain in detail?
In Lichen scrfulosorum ,hallmark feature is  superficial epitheloid dermal granulomas that surround hair follicles and sweat ducts and may occupy several dermal papillae.
Caseous necrosis is usually not seen.