Three Cases of Acne Keloidalis Nuchae

Lee, Soo Keun; Kang, Hoon; Son, Sook Ja

Abstract

We report three cases of acne keloidalis nuchae which showing typical clinical and histopathological findings. A 61-year-old man showed well-defined child-fist sized erythematous to skin-colored hard plaque on his posterior scalp since two years ago and was treated by surgical excision and skin graft(STSG). A 22-year-old man showed discrete pinkish to erythematous pea sized follicular papules and pustules on his occiput since seven years ago and was treated by intralesional injection of triamcinolone for several times with fair response. Finally, a 38-year-old black man showed variable sized hard round follicular papules on his posterior scalp with several grouped hairs on the center of papules and was treated by intralesional injection of triamcinolone effectively. Histopathologically, common findings were follicular and perifollicular inflammation with the infiltration of plasma cells, neutrophils, lymphohistiocytes, massive dermal fibrosis resembling scar tissue, and diminished sebaceous glands.