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Crusty Scalp Lesion


An 89-year-old woman is seen for an erosion on the frontal area of the scalp. History is positive for actinic keratosis. What's your Dx?

An 89-year-old woman with a history of biopsy-proven actinic keratosis on her scalp is seen for a new erosion on the right frontal area. Two weeks of twice-daily mupirocin has brought no improvement and now crusting and purulent exudate are seen. Skin cultures taken show normal flora.


What is your diagnosis?

A. Dissecting cellulitis of the scalp
B. Eosinophilic pustular folliculitis
C. Erosive pustular dermatosis of the scalp
D. Chronic bacterial folliculitis
E. Chronic actinic damage with secondary infection
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