Acne Keloidalis Nuchae, Acanthosis Nigricans - DermAtlas

Contributor

Shahbaz A. Janjua, MD

Diagnosis

acne keloidalis nuchae acanthosis nigricans

Body Site

neck

Age

40 years

Pigmentation

medium

Organization

grouped, clustered

Color

purple

Morphology

plaqulous (plaque / nodule / tumor)

Pattern

symmetric

Comments

This 40-year-old man, who had acanthosis nigricans for the last several years, developed a chronic folliculitis and perifolliculitis of the occipital scalp and posterior neck. Pustules healed with firm violaceous follicular papules and nodules over three years. He developed similar lesions on his back and flanks below the axillae. He was treated with topical tretinoin and oral antibiotics.

Description

multiple, grouped, firm, dome-shaped, follicular papules and nodules

Image Added

7/18/2003 7:59:17

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