Acne Keloidalis Nuchae - Symptoms, Causes & Treatment
By ScanSkinAI Editorial Team✓ Reviewed for medical safetyLast updated June 2026
A chronic inflammatory condition that causes keloid-like bumps on the back of the neck and scalp. It primarily affects men of African descent and can lead to permanent scarring and hair loss if left untreated.
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Quick Answer
Acne keloidalis nuchae is a chronic skin condition that causes firm, itchy bumps and keloid-like scars on the back of the neck and scalp. It primarily affects men of African descent and those with tightly curled hair. The condition is often triggered by close haircuts, shaving, and friction from collars. Early treatment is essential to prevent permanent hair loss and severe scarring. If you notice bumps developing at your hairline, a doctor can help manage the inflammation and recommend safer shaving practices to keep the condition under control.
Clinical Context
Acne keloidalis nuchae (AKN) is a chronic scarring condition predominantly affecting Black men, typically between ages 14-25. Despite its name, it's not true acne or keloid formation, but rather a follicular occlusion disorder. The condition begins as folliculitis and progresses to keloid-like plaques that can become quite disfiguring. Close haircuts and shaving at the nape of the neck are major contributing factors. Early treatment is essential to prevent extensive scarring and permanent hair loss.
Symptoms
- Firm, dome-shaped papules on the back of the neck
- Keloid-like plaques that can merge into large masses
- Pustules and pus drainage in active disease
- Itching, tenderness, and pain
- Permanent hair loss in affected areas
- Formation of sinus tracts in severe cases
Severity & Progression
Causes & Risk Factors
- Chronic irritation from close shaving or haircuts
- Curved hair follicles leading to ingrown hairs
- Follicular occlusion and secondary inflammation
- Bacterial colonization (Staphylococcus aureus)
- Friction from collars, helmets, or sports equipment
- Possible genetic predisposition to scarring
May Be Confused With
This condition can look similar to other skin conditions. A healthcare professional can help distinguish between them.
Treatment & Management
Early intervention is critical to prevent progression. For mild cases, avoiding close cuts and using topical treatments may suffice. Intralesional corticosteroid injections reduce inflammation and flatten plaques. Oral antibiotics control bacterial infection and inflammation in active disease. For established plaques, surgical excision, laser therapy, or radiotherapy may be considered. Patients should avoid close shaving at the nape; clippers should be used with guards, leaving at least 1mm of hair length.
- Avoiding close shaving/haircuts at the nape (leave 1mm+ hair)
- Topical and intralesional corticosteroid injections
- Topical retinoids to prevent new lesions
- Oral antibiotics for active inflammatory disease
- Laser therapy (Nd:YAG or CO2 laser) for established plaques
- Surgical excision for large, disfiguring masses
Red Flags & Complications
Seek medical attention if you experience any of the following:
- Rapid increase in size or number of bumps
- Development of sinus tracts or tunnels under skin
- Pus drainage or signs of active infection
- Significant spreading to scalp or neck
- Disfiguring keloid-like masses affecting appearance
Self-Care Tips
- Avoid close haircuts and shaving at the back of the neck
- Ask barbers to use guards on clippers (leave hair 1-2mm)
- Keep the area clean and dry after haircuts
- Avoid picking or squeezing bumps
- Wear loose collars to minimize friction
When to See a Doctor
If you develop persistent bumps on the back of your neck, especially if they're scarring, causing hair loss, draining pus, or affecting your appearance and self-esteem. Early treatment prevents progression.
Frequently Asked Questions
What does acne keloidalis nuchae look like when it starts?
It usually begins as small, firm, dome-shaped bumps on the back of the neck, near the hairline. These bumps might look like acne, but they can be itchy or tender. If left untreated, they often merge together to form larger, thick, keloid-like scars, sometimes accompanied by pus drainage and crusting. Catching these early bumps is crucial to preventing permanent scarring.
Why am I getting these hard bumps on the back of my neck?
Most cases are triggered by chronic irritation to the hair follicles. Close shaving, skin-fade haircuts, and friction from tight collars or sports helmets are major culprits. Men with tightly curled hair are especially prone, as the hair can curl back into the skin and cause inflammation. Over time, this recurring irritation leads to the hard, raised scars characteristic of the condition.
How do dermatologists treat these scars on my neck?
Treatment depends on how advanced the bumps are. Mild cases often respond to changes in shaving habits combined with topical creams. For raised plaques, doctors frequently use direct corticosteroid injections to flatten the scars and reduce inflammation. If there is an active infection, oral antibiotics may be prescribed. For severe, established scarring, laser therapy or surgical removal might be recommended.
Can I still get haircuts if I have this condition?
Yes, but you must change how your hair is cut. The most important step is to stop shaving the back of your neck down to the skin. Instead of a razor or close balding clippers, ask your barber to use clippers with a guard that leaves at least 1mm of hair. Also, try to wear collarless shirts to reduce daily friction on the area.
When should I see a doctor about bumps on my hairline?
You should consult a doctor or dermatologist as soon as you notice persistent, firm bumps forming on the back of your neck. Waiting can allow the condition to progress into large, solid masses that are much harder to treat and can cause permanent hair loss. Early intervention is the best way to keep the skin relatively smooth and prevent extensive scarring.
Will my hair grow back if the bumps go away?
Unfortunately, significant scarring from acne keloidalis nuchae often destroys the hair follicles, leading to permanent hair loss in the affected areas. This is why getting medical help during the early, mild stages of the condition is extremely important. If the inflammation is stopped before deep scarring forms, you have a much better chance of preserving your hair.
How can ScanSkinAI help with bumps on the back of my neck?
ScanSkinAI can analyze photos of the back of your neck to help you understand if your bumps have characteristics similar to acne keloidalis nuchae or another skin issue. However, our AI is only a screening aid and cannot provide a medical diagnosis. Because this condition can cause permanent scarring, you should always have a healthcare professional carefully examine the area to confirm the condition and prescribe treatment.
Is acne keloidalis nuchae contagious?
No, the condition is absolutely not contagious. You cannot catch it from someone else, nor can you spread it by sharing towels, hats, or clippers. It is an inflammatory disorder rooted in how your hair follicles react to physical irritation, curved hair structure, and normal skin bacteria. While barber tools can cause the triggering irritation, the condition itself is non-infectious.
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Medical References
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.