Discoid Lupus Erythematosus
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- Discoid
- Milder variant of systemic
- Depigmentation, erythema, scaling, erosions, ulceration, crusting
- Usually involves nasal planum, dorsum of muzzle, occasionally pinnae, lips, oral mucosa or periocular area
- Microscopically: lichenoid interface dermatitis, often with lymphocytes, plasma cells, basal cell degeneration, loss of pigment