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Filter by morphology, mechanism, acuity, reaction pattern, and more. Tags are ancestor-aware — picking palm also surfaces hand and upper-extremity conditions.
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Actinic keratosis
Lichen planus
T-cell-mediated inflammatory dermatosis classically defined by the 'four P's' (purple, pruritic, polygonal papules); lichen planus pigmentosus is a distinct skin-of-color variant.
Lichen planus like keratosis
Psoriasis
Chronic immune-mediated inflammatory skin disease with distinct morphology in skin of color (violaceous rather than salmon-pink); treatable to clear with modern biologics.
Squamous cell carcinoma in situ
Tinea capitis
Dermatophyte infection of the scalp, overwhelmingly a disease of Black children in the US (Trichophyton tonsurans); systemic antifungal therapy is required and household contacts must be addressed.