This review covers acne keloidalis nuchae and what current research finds, where treatment falls short, and what matters for daily care. Acne keloidalis nuchae is a chronic inflammatory disorder of hair follicles on the back of the scalp and nape, causing papules, pustules, firm plaques, and scarring hair loss. It affects mainly men of African descent, so prevention and early treatment focus on reducing follicle injury and hair-related inflammation. Research points to laser hair removal as the best-evidenced nonsurgical option, while older drug regimens often work slowly and incompletely.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What is keloid acne and who gets it?
- Why do these bumps form?
- Which treatments have the strongest evidence?
- What practical steps reduce damage?
What is keloid acne and who gets it?
Acne keloidalis nuchae starts as small bumps along the hairline at the nape. The bumps can join into thick scars and patches of permanent hair loss.
The Canadian Medical Association Journal reports it occurs almost exclusively in people of African descent, mainly men by about 20 to 1, with estimates from 0.5% to 13.6% in a clinical review for physicians. The name confuses many readers because the bumps are neither true acne nor true keloids. Lesions usually lack comedones and often do not behave like keloids elsewhere on the body.
Why do these bumps form?
Curly hair, close shaving, rubbing from collars, and other follicle injury play a central role. WebMD describes follicle walls breaking open, loose hair shafts triggering foreign-body inflammation, then fibrosis and trapped hair.
That process explains the location on the occipital scalp and nape. It also explains why picking, close neck shaves, and repeated friction can keep new papules and pustules coming.
Which treatments have the strongest evidence?
Laser hair removal has the strongest nonsurgical evidence because it reduces the buried hair that drives inflammation. WebMD reports 82% to 95% improvement after one to five sessions with 1064-nm Nd:YAG and 810-nm diode lasers, compared with 34% to 49% reduction with UVB in a guide to causes and care. Mild disease is often treated with topical or injected steroids, retinoids, and antibiotics.
Springer Nature notes in a review in Dermatology and Therapy that traditional care can take months, often gives incomplete results, and allows recurrence. Persistent thick plaques may need surgical excision. Surgery alone raises recurrence risk unless paired with added treatment such as steroids or radiotherapy.
What practical steps reduce damage?
Early papules respond better than established plaques, so seek care soon after bumps appear. Avoid close shaves on the neck, reduce collar friction, and do not squeeze or dig out ingrown hairs.
The condition rarely clears on its own and can progress after about five years without treatment. Send firm plaques for dermatology care because plaques respond less well than early lesions.
- Ask the barber to avoid razor-close neckline shaves.
- Wear softer or looser collars when the nape is irritated.
- Get new painful papules or draining pustules checked promptly.
- Ask dermatology about laser hair removal for recurring lesions.