Pustular skin plaques on the limbs similar to folliculitis decalvans that do not affect the scalp

A 63-year-old man exhibited progressive pustular folliculitis on his forearms and lower leg, despite traditionally limited scalp involvement.

• Folliculitis decalvans is typically confined to the scalp but may also manifest on other body parts, as demonstrated in this case.
• The patient had a 3-year history of inflammatory patches and scarring alopecia on his limbs, rather than the scalp.
• Isolation of Staphylococcus aureus and specific histopathological findings supported a diagnosis of folliculitis decalvans-like pustular folliculitis.
• Biopsies showed features such as follicular pustules and fibrosis, which are characteristic of folliculitis decalvans.
• Treatment with antibiotics and topical corticosteroids was effective, similar to responses observed in scalp cases of folliculitis decalvans.

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