Those Hard Bumps on the Back of Your Head: Understanding Acne Keloidalis Nuchae

By Dr. Hetav K Pandya

Every few weeks a young man sits in front of me, turns his head away, and says something like: "Doctor, mere gardan ke peeche daane ho gaye hain. Barber ne kaha shaving se hoga, kisi ne kaha allergy hai. Cream lagayi, kuch nahi hua." Sometimes he has been living with it for five years. Sometimes there is already a thick, hairless, rope-like patch at the back of his head that he hides under a cap.

What he has is almost always a condition called acne keloidalis nuchae — AKN for short. It is common, it is very treatable in the early stage, and it is badly misunderstood by almost everyone, including some of the people treating it.

Let me explain it the way I would if you were sitting across the table from me.

What is acne keloidalis nuchae?

Despite the name, it is not really acne, and it is not really a keloid. Both parts of the name are historical accidents.

What is actually happening is inflammation around the hair follicles at the back of the head and the nape of the neck — the hairline area. The body starts reacting to the hair follicle itself as if it were a foreign body. That inflammation, repeated over months and years, leads to scarring. The scar tissue builds up into firm bumps, and the hair follicle inside that area is destroyed permanently.

That last line is the important one, so I will say it plainly: the hair loss in AKN is permanent hair loss. Once the follicle is scarred over, no medicine and no oil will bring it back. That is exactly why I get impatient when someone has been applying home remedies for three years before coming in.

What it looks like

It usually goes through stages, and most patients can recognise where they are:

• Early: small, itchy, red or skin-coloured bumps at the back of the neck along the hairline. They may look like pimples. Sometimes a few have pus.
• Middle: the bumps become firmer, darker, and more numerous. Itching and a burning sensation are common. Small bald spots appear between them.
• Late: the bumps join together into thick, raised, hairless plaques. Sometimes there are tunnels underneath that discharge pus or blood on pressure. Hair may grow out in tufts — several hairs from one opening, like a doll's hair.

It is far more common in men, usually starting somewhere between the late teens and the thirties, and it is more common in people with coarse or tightly curled hair.

Why did this happen to me?

Nobody can give you one clean cause, but here is what genuinely contributes:

1. Very short haircuts and razor use at the nape. This is the biggest one in my practice. When hair is cut extremely short at the hairline, the sharp cut end curls back and pierces the skin, or grows back into the follicle wall. The body treats it as an intruder and inflames. Repeat that every two weeks at the barber for ten years and you get chronic inflammation.

2. Constant friction. Tight shirt collars, helmet straps, the back edge of a cap, a bike helmet worn several hours a day. Rubbing at the same spot keeps the area irritated.

3. Individual tendency. Some people simply have a stronger inflammatory and scarring response. Family history is common. This is not your fault and not something you did.

4. Ingrown hair after shaving the nape. Very common when the barber "cleans up" the neckline with a blade.

Things that are not the cause, no matter what you have been told: poor hygiene, oily food, "garmi", or masturbation. I have heard all of these blamed. None of them are it.

What people usually try first — and why it fails

Almost every patient has already been through this list:

• Antibiotic tablets for a week, again and again. They help a little when there is pus, then everything comes back. AKN is not primarily an infection, so treating it only as one is like mopping the floor while the tap is running.
• Steroid creams from a pharmacy without supervision. These do reduce the redness — which is why they feel like they are working — but used blindly for months on the neck they thin the skin, cause stretch marks and stubborn discolouration, and the moment you stop it flares.
• Getting the bumps cut open at a clinic. Squeezing or incising these is not the same as draining a boil. It usually adds more scar.
• Oils, ubtans, and "keloid" home remedies. They do nothing to the underlying follicular inflammation.

What actually helps

Treatment depends heavily on which stage you are at, so the honest answer is that no article can prescribe for you. But here is a realistic picture of what I use.

For early disease — small bumps, no thick plaques

This is the stage where we can genuinely control things.

• Stop the trigger first. Grow the hair at the nape out to at least a few millimetres. No blade at the neckline. Tell your barber: scissors only at the back, no razor finish, no clipper on zero. Loosen the collar. This single change does more than most medicines.
• Prescription topical treatment, typically a combination of a medically supervised topical steroid or a steroid-antibiotic combination for a defined, limited period — used to break the inflammation cycle, not applied forever.
• A topical retinoid at night in some patients, to reduce follicular plugging.
• A long course of an oral antibiotic — often a tetracycline group medicine — used for its anti-inflammatory effect rather than as an infection treatment. This is a course of a few months, not five days, and it needs supervision.
• Antiseptic wash at the nape.

For the firm bumps and plaques

• Intralesional steroid injections. Fine-needle injections directly into the bumps. This is the workhorse for flattening firm lesions. It is done in sittings, spaced a few weeks apart, and yes, it stings for a few seconds.
• Laser hair reduction over the affected area. This is the part that surprises people, but it makes complete sense: the disease is driven by the hair follicle, so permanently reducing hair in that zone removes the trigger. In the right patient this is one of the most useful long-term tools we have.
• Cryotherapy for selected lesions.

For advanced, thick, tunnelling disease

• Surgical excision of the plaque, done properly, with the wound managed to heal in a controlled way. This gives excellent results in severe cases but it is a considered decision — there will be a scar and a hairless strip, though usually far neater than what was there before.

The expectations conversation

I always have this talk, and I would rather you hear it now than be disappointed later:

1. We can stop it from progressing. We can flatten the bumps. We can settle the itching. These are realistic.
2. We cannot regrow hair in the scarred bald patches. No one can. Anyone promising that is selling you something.
3. This is a long game. Think in terms of months, and then ongoing maintenance — mainly haircut discipline. Patients who go back to the zero-blade neckline after treatment come back to me in two years with the same problem.
4. Early treatment is worth far more than good treatment later. A patient who comes in with ten small bumps has a much better ending than one who comes in with a thick plaque, and the difference is usually just time.

Practical things you can start today

• Ask the barber to leave the nape hair at a few millimetres. No razor, no zero clipper at the back.
• Do not pick, squeeze, or press the bumps.
• Wash the area with a gentle antiseptic cleanser and dry it properly, especially after workouts.
• Avoid stiff, tight collars and long hours in a helmet without a soft, clean liner.
• Stop any unsupervised steroid cream you were given over the counter — but taper under advice rather than stopping abruptly if you have been on it for months.
• Take a photo of the back of your neck today. It is genuinely the best way to judge progress in three months, because you cannot see the area yourself.

When to come in

Come and get it looked at if you have persistent bumps at the back of the neck for more than a few weeks, if there is itching or discharge, if bald patches have started forming, or if you have already been treated repeatedly and it keeps coming back.

If you are in Rajkot and this sounds like you, book a consultation and let me actually look at the area. It takes two minutes to diagnose and the treatment plan is very different depending on the stage — which is precisely why guessing from photographs on the internet does not work.

The one message I want you to take away: those bumps are not a hygiene problem and not a permanent sentence, but every month you wait, a few more follicles are lost for good.

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