Keratosis Pilaris and Scarring Alopecia

A 28-year-old man experienced scarring alopecia on his scalp and possible folliculitis on his limbs and trunk for over 10 years, with no improvement from topical treatments. He had a family history of keratosis pilaris, and all family members had straight hair. His scalp showed an 8-cm area of scarring alopecia with follicular scaling papules and pustules, while the rest of his scalp hair was excessively curly. His trunk, arms, and legs had erythematous follicular keratotic papules, and his palms and soles exhibited mild keratotic thickening. He had previously been treated with oral vitamin A without success.