Body system
Hidradenitis suppurativa on Black skin
Key cue: Recurring painful deep bumps in armpits, groin, buttocks, or under breasts, not just 'boils' or 'acne'. Black women have 2-3× the severity and average 7-10 years to diagnosis.
Read the atlas pagePityriasis rosea on Black skin
Key cue: Single 'herald patch' followed in 1-2 weeks by many smaller oval lesions in a Christmas-tree distribution on the trunk. On Black skin, lesions are hyperpigmented or violaceous rather than pink-salmon.
Read the atlas pageSarcoidosis (cutaneous) on Black skin
Key cue: Violaceous or hyperpigmented papules and plaques on face, scalp, old scars, or tattoos, 'scar sarcoidosis' is particularly common in Black patients.
Read the atlas pageStevens-Johnson syndrome / toxic epidermal necrolysis on Black skin
Key cue: Painful rash + mucosal sloughing (mouth, eyes, genitals) after a new medication. Pain disproportionate to visible lesions is a warning.
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