Folliculitis
Folliculitis is inflammation of hair follicles. It shows up as small bumps and pus spots, each one sitting at a hair, and it is often itchy or tender. Most folliculitis is mild and settles once whatever is irritating or infecting the follicles is dealt with.
Key facts
Folliculitis at a glance.
Typical signs
Small pustules around hairs
Common locations
Hair-bearing skin
Expected course
Depends on the cause
Treatment options
Trigger control; antibacterial or antifungal treatment
What is it?
Top things to know about Folliculitis
- It is inflammation of hair follicles. It can be superficial or deeper.
- It ranges in severity. A small pustule can sit around a hair, while deeper infection can form a boil.
- Not every case is infection. Irritation after hair removal or reactions to products can look similar.
- Scalp scarring needs attention. Some follicle disorders can permanently damage hair.
- Overview Inflammation around hair follicles can produce itchy or sore bumps and pustules. Bacteria, yeast, irritation and occlusion are among the causes. This broad category includes Malassezia folliculitis; the cause determines treatment.
What it looks like
What Folliculitis looks like
Folliculitis is inflammation of the hair follicles, often from bacteria, yeast or irritation from shaving. It causes small red bumps or white-headed pimples around hairs, which may itch or burn. It can appear anywhere hair grows, especially the beard area, scalp, chest, back, buttocks and legs. Clusters often follow shaving, tight clothing, sweating or time in a hot tub.
Folliculitis is named by its cause. The cause decides the right treatment.
Bacterial folliculitis
Staph infection, the most common.
Hot-tub folliculitis
From bacteria in poorly treated water.
Yeast folliculitis
Uniform itchy bumps on chest and back.
Razor bumps (pseudofolliculitis)
From hairs curling into skin.
Where it shows up
Folliculitis can affect many hair-bearing sites. The example marks upper trunk areas; the actual distribution depends on the cause.
Chest
Locations on the front of the upper trunk.
Upper back
Locations on the upper back.
On different skin tones
Folliculitis on different skin tones
On lighter skin, folliculitis bumps look pink to red. On brown and Black skin, they may look skin-colored, brown or purple, and often leave dark marks. Razor bumps and scarring are more common in people with tightly curled hair.
What happens in Folliculitis?
Infection, irritation or blockage can cause inflammation around a hair follicle. The response may produce a small tender bump or pustule around the follicular opening.
- A small pustule may form: A tender bump appears around the opening.
- A follicle becomes irritated: Microbes or physical irritation can start inflammation.
- Immune cells gather: The response surrounds the affected follicle.
Causes and triggers
What causes Folliculitis
Causes
Why it happens
Folliculitis is inflammation of hair follicles, usually from bacteria, yeast or irritation.
Risk factors
Raise the odds
- Shaving
- Diabetes
- Obesity
- Weakened immunity
Triggers
Bring it on or make it worse
- Shaving and waxing (Well established)
- Hot tubs (Well established)
- Tight clothing and sweat (Strong link)
- Antibiotics or steroid creams (Possible)
When it usually starts
When it usually starts
There is no single typical starting-age range. Bumps can follow shaving, friction, sweating or hot-tub exposure. Recurrent or unexplained episodes deserve an assessment of the cause.
Daily care
Daily care for Folliculitis
Change how you shave
Fresh single blade, with the grain, with gel, days off when sore.
Shower and change after sweating
The most effective habit for trunk, buttocks and thighs.
Warm compresses on a tender lump
Help a boil come to a head and drain.
A gentle cleanser and moisturizer
An intact barrier means fewer inflamed follicles.
Loose clothing over the area
Remove the occlusion and mild folliculitis often settles.
An antifungal shampoo as a body wash
The standard approach for Malassezia yeast.
Prescription treatment when needed
The wrong class is a common reason for failure.
Avoid: Close shaving with a dull razor
Cutting below the surface damages the follicle.
Avoid: Shaving against the grain
Stretching the skin does the same.
Avoid: Dry shaving
More drag, more nicks, more inflamed follicles.
Avoid: Staying in damp workout clothes
A reliable way to bring on a crop.
Avoid: Tight, non-breathable fabrics
Trap heat and sweat over the follicles.
Avoid: Squeezing and picking
Pushes infection deeper, turning a spot into a boil.
Avoid: Scrubbing and exfoliating
Damages the follicle openings and the barrier.
Avoid: Heavy oils and pomades
Especially under clothing or a hat.
Avoid: Poorly maintained hot tubs and pools
Weak disinfection lets Pseudomonas survive.
Avoid: Sharing razors and towels
Moves Staphylococcus aureus around.
Treatments
Treatments for Folliculitis
Benzoyl Peroxide wash
A 4 to 10 percent wash lathered on in the shower and left for a minute before rinsing, for the bacterial kind on the thighs, buttocks, chest and back. It lowers the bacteria on the skin without an antibiotic, which is why it also works as a maintenance measure for people who keep getting crops. It bleaches towels, sheets and colored clothing, so use white ones.
Chlorhexidine wash
An antiseptic wash used two or three times a week over the affected area, and a good option for someone whose bumps keep coming back in the same place. It lowers the bacterial load on the skin rather than treating an established infection. Keep it away from the eyes and ears, and stop if it stings or dries the skin, since damaged skin is the problem you started with.
Ketoconazole shampoo as a wash
The standard first move for the yeast kind: itchy, uniform bumps on the chest, back and shoulders, often worse after a course of antibiotics. Use the shampoo as a body wash a few times a week and leave it on for several minutes before rinsing. It does nothing for bacterial folliculitis or razor bumps, and yeast folliculitis tends to come back, so many people keep using it once a week.
Hydrocortisone
It is the obvious thing to reach for because the bumps itch, and it is usually the wrong one. Steroid cream quietens the itch for a few days while the infection in the follicles carries on underneath, and the rash that comes back is often more widespread. It also changes how things look, which makes the diagnosis harder afterward. Cool compresses and a medicated wash are the safer starting point.
Salicylic Acid
A leave-on 2 percent lotion or pad on the beard, neck or bikini line, where the problem is hairs curling back into the skin rather than an infection. It keeps the follicle opening clear so fewer hairs get trapped, and it is used between shaves rather than on raw skin. It will not touch a bacterial or yeast folliculitis, and on already inflamed skin it stings and can make things worse.
Tea Tree Oil
It does have some activity against bacteria and yeast in the laboratory, which is why it appears in so many folliculitis remedies. There are almost no proper trials of it in folliculitis, and undiluted tea tree oil is a common cause of allergic contact dermatitis, which produces an itchy rash on top of the one you were treating. A benzoyl peroxide or antifungal wash is the better use of the same shower.
Mupirocin
An antibiotic ointment for a small, clearly bacterial patch, dabbed on the spots two or three times a day for about a week. It works well when the area is limited and the cause is genuinely bacteria. It does nothing for yeast folliculitis or razor bumps, and using it on and off for months is how resistance builds, so it is a short course rather than a standby.
Mupirocin
Clearing Staph from the nose. Some people carry Staphylococcus aureus in the nostrils or skin folds, which is one reason boils keep returning to the same person. A course of antibiotic ointment inside the nostrils, together with antiseptic washes and hot washing of towels and bedding, can reduce that. It is used for repeated boils rather than for a single episode, and it does not always hold, so household measures matter alongside it.
Clindamycin
A lotion or solution for bacterial folliculitis spread over a wider area than an ointment can cover, such as the beard or the back. It is usually paired with a benzoyl peroxide wash, which both improves it and reduces resistance. It is not the answer if the same patch keeps returning, because that is a shaving, friction or occlusion problem rather than an antibiotic one.
Cephalexin
The usual first antibiotic tablet for bacterial folliculitis that is deep, spreading or too widespread for a cream, and for boils with surrounding redness. A course is normally about seven days. It has no effect on yeast folliculitis or razor bumps, and if the same area keeps flaring after each course, the cause is still there rather than the antibiotic being wrong.
Trimethoprim-sulfamethoxazole
Used when resistant Staphylococcus aureus is likely or has been grown on a swab, which is the situation in which the first antibiotic did not work. This is the main reason for swabbing a spot before starting treatment. It is avoided in pregnancy and with some other medicines, so tell the prescriber everything you take.
Fluconazole
An antifungal tablet, usually a short weekly course, for yeast folliculitis that is widespread or has not cleared with washes alone. It works faster and more completely than topical treatment on the chest and back. The yeast lives on everyone and comes back, so it is normally followed by an antifungal wash once a week to hold it.
Doxycycline
A longer course is sometimes used for stubborn or recurring folliculitis, partly for the bacteria and partly because it calms inflammation. It is a second choice rather than a first one, since it can allow yeast folliculitis to take hold. It also causes sunburn easily, so it needs daily sunscreen on anything the sun reaches.
Incision and Drainage
Draining a boil. A boil that has come to a head is opened with a small blade under local anesthetic and the pus is let out, which relieves the pain almost immediately. It is often the whole treatment, with antibiotics only added if the redness is spreading. Done properly it heals with a much smaller mark than a squeezed boil, which is the argument for having it done rather than attempting it at home.
Laser Hair Removal
For folliculitis and razor bumps driven entirely by shaving, particularly in the beard and neck, reducing the hair removes the cause instead of treating the result. It usually takes six or more sessions and works best with a device suited to your skin tone, since the wrong one can burn or leave marks on deeper skin. It is worth considering after months of the same bumps rather than after one crop.
Outlook
What to expect with Folliculitis
Most folliculitis is short-lived. The pattern below is a typical superficial bacterial case. Folliculitis returning to the same place month after month points at an ongoing cause - shaving method, friction, occlusion, a yeast rather than a bacterium, or a Staphylococcus aureus reservoir, worth investigating rather than re-treating.
- 1
Days 1 to 2 · Starting
Small itchy or slightly tender bumps appear, each at a hair, some with a pinpoint of pus. They arrive together, not one at a time.
- 2
Days 3 to 7 · Peak
The bumps are at their most obvious and itchiest. Pus spots may break open and crust.
- 3
Days 7 to 10 · Settling
With gentle care and the trigger gone, the bumps flatten and the itch fades. Superficial folliculitis leaves no scar.
- 4
Weeks 2 to 12 · Marks
Flat pink, brown or gray marks can stay where the bumps were, especially on deeper skin tones. Not infection; they fade over months.
- 5
If it goes deeper · Boils
A deeper infected follicle makes a tender, swollen lump that comes to a head over days. These often need draining or oral antibiotics, and can scar.
Complications
Complications to know about
Boils and carbuncles
When the infection goes further down the follicle it becomes a boil: a tender, swollen lump that comes to a head over several days. Several joined together are called a carbuncle. Squeezing is what turns a surface bump into one of these, so warm compresses and leaving it alone are the right first move. Boils often need draining or oral antibiotics, and they can leave a scar.
Cellulitis
Sometimes the infection leaves the follicle and spreads into the surrounding skin. The signs are redness, swelling and warmth spreading outward from the spot rather than staying in it, sometimes red streaks running away from it, and often a fever. That is a same-day problem needing oral antibiotics, and it is more likely in people with diabetes or a weakened immune system.
Keloid scars
Deep folliculitis on the chest, shoulders, jawline and the back of the neck can heal into raised, thickened scars, and that risk is higher on deeper skin tones. At the nape there is a specific pattern, acne keloidalis nuchae, where the bumps become firm and permanent and the hair in that patch is lost. It responds far better to early treatment than to waiting, so firm bumps building at the back of the neck are a reason to be seen rather than to keep treating at home.
When to get help
When to get help
Make an appointment
Arrange assessment if the rash persists, keeps returning, is extensive or has not responded to treatment. A pustule swab may help distinguish bacteria and guide treatment.
Prompt assessment
Seek prompt medical care for fever, rapidly spreading redness or warmth, worsening pain, a large deep lump, or feeling unwell. Seek care earlier if your immune system is suppressed.
Eye symptoms
Bumps around the eye with eye pain, swelling, light sensitivity or vision change need prompt assessment. Do not apply body washes or skin medicines into the eye.
Lookalikes
What else could it be?
Acne
Acne includes blackheads and a mix of spot sizes. Folliculitis usually centers on hairs, often itches, and lacks blackheads.
Keratosis Pilaris
Keratosis pilaris makes long-standing, dry, rough plugs without pus. Folliculitis more often appears as a new crop of itchy or sore bumps.
Hidradenitis Suppurativa
Folliculitis may clear and appear elsewhere. Hidradenitis keeps returning to the same skin folds, causing deeper lumps that can form tunnels and scars.
Questions
Questions you might be asking.
How do I tell folliculitis from acne?
Look for blackheads and whiteheads. Acne has them, folliculitis does not. Folliculitis bumps are all the same size, each sits at a hair, they itch more than they hurt, and they appear where you shave, sweat or rub - thighs, buttocks, beard, chest, back. Acne sits on the face, chest and upper back, has spots of different sizes, and is not itchy.
Is it contagious?
Mostly not in ordinary contact. The bacteria can pass through shared razors, towels, unwashed sports gear and close skin contact - avoid those while it is active. Yeast folliculitis and razor bumps are not caught.
Why does it keep coming back in the same place?
Because the cause is still there - the shaving method, friction, damp clothes, or a yeast cause treated as bacterial. Some people also carry Staphylococcus aureus long term, which can be tested and treated.
Can I still shave?
Yes, but change how. A fresh single-blade or safety razor, with the grain, with gel, and no stretching the skin. Take days off while the skin is inflamed. For persistent razor bumps, laser hair reduction is a longer-term option.
Should I use hydrocortisone on the itch?
Not on undiagnosed bumps. Steroid creams calm the itch for days while the infection carries on underneath, and the rash comes back more widespread. If itch is the main problem, a medicated wash and cool compresses are safer.
Will it scar?
Superficial folliculitis heals without scarring, though flat dark marks take months to fade on deeper skin tones. Deep folliculitis and boils can scar, and firm raised bumps at the back of the neck can scar permanently - reasons to be seen early rather than keep treating at home.
Sources
Sources and further reading
Related