page_title: Lupus vulgaris
section_title: Pathophysiology
hierarchical_section_title: Lupus vulgaris / Pathophysiology
caption_attribution_description: Figure 42. Lupus vulgaris simplex. The corium is studded with little collections of tuberculous follicles which make up the apple-jelly nodules. The vessles are dilated and the tissues between the nodules contain many leuocytes. Teh epithelium is slightly cedematous and the horny layer is irrefular. 75x
context_page_description: Lupus vulgaris are painful cutaneous tuberculosis skin lesions with nodular appearance, most often on the face around the nose, eyelids, lips, cheeks, ears and neck. It is the most common Mycobacterium tuberculosis skin infection. The lesions may ultimately develop into disfiguring skin ulcers if left untreated.
context_section_description: Histologically, it shows well-formed granulomas with necrotic centers in dermis.
caption: Dermis showing well-formed granulomas with necrotic centers
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