Scarring Alopecia and Erythematous Pustules on Scalp

A 40-year-old man presented to the doctor with a scarring condition of his scalp. Patchy scarring alopecia along with erythematous pustules were seen on the patient’s vertex scalp. In some areas, there were several hairs growing out of a single hair follicle, similar to “bristles on a toothbrush.”

Is it lichen planopilaris, folliculitis decalvans, tinea capitis, or discoid lupus erythematosus?

Can you diagnose the patient? Use the Differential Builder in VisualDx to help you.

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Scarring Alopecia and Erythematous Pustules on Scalp – Let’s Diagnose

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