Condition

Fungal Acne (Malassezia Folliculitis)

Fungal acne is not acne. It is an overgrowth of a yeast that lives on everyone's skin, inflaming hair follicles into small, itchy, same-sized bumps on the chest, back, shoulders and hairline. It responds to antifungal treatment and tends not to respond to acne treatment, which is why the distinction is worth making.
Dr. Schwarz, MD · Board-certified dermatologistLast reviewed September 8, 2026
Close-up of light skin with a scattered cluster of small pink raised bumps, some with tiny white tips

Start here

Fungal acne is the condition people most often treat as something else. Two questions usually sort it out — does it itch, and are there any blackheads? Real acne rarely itches and this almost always does, and if every bump is the same small size, in a sheet across the chest, shoulders and upper back, with no blackheads, I start thinking Malassezia rather than acne. The name misleads — it is not acne, and Malassezia is a yeast that lives on everybody's skin, not something you caught.

— Dr. Schwarz, Board Certified Dermatologist

Key Facts

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How commonCommon, and commonly missed. Frequently treated as acne for months before it is recognized
Who gets itMost often teenagers and adults in their teens to thirties, more in hot humid climates, in athletes, and after courses of oral antibiotics or steroids
Curable or managedTreatable and often clears quickly, but it returns easily. Most people manage it with occasional maintenance
Prescription neededNot always. Over-the-counter antifungal shampoos used as a body wash clear many cases. Stubborn cases need prescription tablets
Time to improveItching often settles within one to two weeks. Bumps usually clear over three to four weeks

What It Is

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Fungal acne is folliculitis — inflamed hair follicles — caused by Malassezia, a yeast that lives on nearly everyone's skin. Its formal name is Malassezia folliculitis, once Pityrosporum folliculitis. You did not catch it and it has nothing to do with hygiene. It is a normal skin organism multiplying too much.

Malassezia feeds on skin oils, so it thrives where skin is oily, warm, sweaty and covered. That makes the pattern consistent — bumps in a sheet across the upper back, chest, shoulders and upper arms, along the hairline and forehead, sometimes the jawline and neck. It is uncommon on the lower face, where ordinary acne is heaviest.

The bumps are one to two millimeters and strikingly uniform, as if one spot were copied across the area. Some have a pinpoint of pus. No blackheads and no whiteheads, because this does not plug pores. And it itches, which acne does not.

It often starts after a hot humid spell, heavy sweating in occlusive clothing, oral antibiotics, oral or topical steroids, or starting isotretinoin. The antibiotic pattern is the most telling — antibiotics cut the skin bacteria, and the yeast fills the space.

Malassezia is the same group of yeasts behind dandruff, seborrheic dermatitis and tinea versicolor. A flaky scalp with itchy chest bumps is a useful clue.

Symptoms

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Bumps after sweating

Chest and Back

Crops of small, same-sized itchy bumps across the upper chest, shoulders and back, often flaring after workouts or hot weather. Unlike acne, there are usually no blackheads. Staying in damp clothing is a common trigger.
A rash mistaken for acne

Forehead and Hairline

Fine, uniform bumps along the forehead and hairline, sometimes worse under hats or after using rich hair products. It is frequently treated as ordinary acne for months without improving. The itch is the clue that separates the two.
Acne that got worse on treatment

Antibiotic-Worsened

Bumps that appeared or spread while taking an antibiotic for acne, because the antibiotic clears bacteria and leaves more room for the yeast. Skin that gets worse rather than better on acne treatment is worth a second look.

How It Looks by Skin Tone

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Shoulders and upper back on fair skin, covered in a sheet of many small pink-red bumps, all of them the same size and packed close together.Shoulders and upper back on medium olive skin, covered in a sheet of many small dull pink-brown bumps, all of them the same size and packed close together.Shoulders and upper back on brown skin, covered in a sheet of many small bumps of identical size that read brown and violet rather than red.Shoulders and upper back on deep brown skin, with a sheet of small bumps of identical size and, beside them, a wide field of flat, evenly darker marks where earlier bumps have healed.
LightMediumBrownDeep

On deeper skin tones the bumps are brown, violet or skin-colored rather than red, so the color cue most descriptions rely on is useless. The pattern stays reliable — many small bumps of identical size, in a sheet rather than scattered, on the chest, shoulders and upper back, and itchy.

With the redness harder to see, it gets treated as ordinary body acne for far longer. Months of benzoyl peroxide, retinoids or antibiotics will not clear it, and antibiotics may prolong it. What it leaves behind is the bigger issue. Even mild fungal acne can heal into a field of flat dark spots — post-inflammatory hyperpigmentation — and because the bumps come in large numbers those marks cover a wide area and take six to twelve months to fade. Treating early and not picking reduce them most. Daily sunscreen on the shoulders and upper chest helps them fade faster. Tinea versicolor, from the same yeast, makes flat patches lighter or darker than the surrounding skin rather than bumps. On deeper skin tones the lighter patches stand out more, and the color difference can take months to even out after the yeast is treated. It is not a scar and not permanent.

Where It Shows Up

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Back view of a whole body with red marks across the upper back, both shoulders and both upper arms. The rest of the body is clear.
Upper back, chest, shoulders and upper arms
It lands where skin is oily, warm and covered. Bumps that are all the same size and all itchy, in these areas, in someone whose acne treatment is not working, is the pattern that points to it.
Front view of a head with red marks along the hairline and across the forehead, along both sides of the jaw and on the neck.
Forehead, hairline and jawline
On the face it runs along the forehead and the hairline, and it can sit on the jawline and the neck. It is uncommon on the lower face, which is where ordinary acne is usually heaviest.

What Happens in the Skin

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This is what is going wrong under the skin, in the order it happens. Click a step to see it.

How Fungal Acne (Malassezia Folliculitis) happens
Skin basics
BARRIEREPIDERMISDERMISPOREOILGLAND0NORMAL SKIN AND ITS YEAST1OIL THE YEAST FEEDS ON2HEAT, SWEAT AND OCCLUSION3THE YEAST MULTIPLIES INSIDE4THE FOLLICLE INFLAMES AND ITCHES

A yeast called Malassezia lives in the openings of hair follicles on almost everyone from puberty onward. It cannot make its own fats, so it feeds on the oil the skin produces. The bacteria living alongside it, and the limited amount of oil, keep its numbers low enough to cause nothing at all.

Malassezia yeast already lives on almost everyone's skin from puberty onward. It cannot make its own fats, so it feeds on the oil the skin produces, and it sits in the openings of hair follicles where that oil collects.

Conditions shift in the yeast's favor. Heat, humidity, sweat held against the skin by clothing, heavy oils, or a course of antibiotics that clears the bacteria it competes with all give it room to grow.

The yeast multiplies down inside the follicle and breaks skin oils down into fatty acids and other byproducts. This is the step every antifungal treatment is aimed at, and the step acne treatment does nothing about.

The immune system reacts to that activity and the follicle becomes a small, red or brown, itchy bump. Every bump goes through the same process, which is why they all end up the same size. Almost everything on the lists below is pushing on one of these four steps.

The outer film of dead cells and oil. It holds water in and keeps irritants out, and it is thinner than a sheet of paper. Almost every dry, itchy, stinging skin problem starts here.

The outer layer, and the only one anything in a jar reaches. It renews itself constantly: a cell made at the bottom takes about a month to reach the surface and flake off. Most of what a skincare product does, it does here.

The living layer underneath, holding the blood vessels, the nerves and the collagen. It is where lasting change happens and it is hard to reach: most of what is sold for the skin never gets this far.

Four things happen, in order. Malassezia is already on the skin — it lives on almost everyone from puberty onward. Conditions shift in its favor: heat, humidity, sweat, oil, occlusive clothing or products, or a change in the bacteria it competes with. The yeast multiplies inside hair follicles and breaks skin oils down into fatty acids. The immune system reacts, and the follicle becomes an inflamed, itchy bump.

That explains the two commonest triggers. Oral antibiotics cut the skin bacteria that keep Malassezia in check, so a course taken for acne or a chest infection can be followed weeks later by a crop of itchy bumps. Oral and topical steroids suppress the immune response containing the yeast, with the same result.

It also explains why acne treatment fails. Acne is blocked pores, oil and a bacterium called Cutibacterium acnes, and its treatments unblock pores and reduce that bacterium. Neither touches a yeast. Benzoyl peroxide has some effect on Malassezia, so a few people improve partially, but it is not the right tool, and antibiotics can make things worse.

Malassezia cannot make its own fats and takes them from its surroundings. That is where malassezia-safe or fungal-acne-safe product lists come from. The biology is real; how much any single ingredient in a finished product matters on human skin is not established, and the online lists go well past the evidence.

Risk Factors

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Fungal acne is about conditions, not cleanliness. Everyone carries the yeast; what varies is whether the environment lets it overgrow.

Heat & occlusion
Heat, humidity and heavy sweating
The dominant factor. Cases rise in summer, in hot climates, and in people who train hard or work outdoors.
Heat & occlusion
Occlusive clothing and gear
Sports tops, backpacks, uniforms, damp clothes left on after exercise. The bumps often match where fabric sat.
Heat & occlusion
Heavy oils and butters
Occlusive body products on the chest, back and hairline, especially under clothing.
Medicines
Recent oral antibiotics
The most recognizable trigger. Bumps appearing a few weeks into or after a course is a strong clue.
Medicines
Oral or topical steroids
They suppress the immune response that keeps the yeast in check.
Medicines
Isotretinoin treatment
A crop of itchy follicular bumps early in treatment is well recognized. Tell the prescribing doctor.
Skin & hormones
Oily skin and adolescence
The oiliest years bring the most fungal acne.
Skin & hormones
Pregnancy and hormonal changes
Shifts in oil production and immunity can bring it on.
Other health conditions
Diabetes and a weakened immune system
Both make overgrowth more likely and more stubborn.
Other health conditions
Dandruff or seborrheic dermatitis
Same group of yeasts, often in the same person.

Course

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Fungal acne appears over a short period rather than gradually, and the right treatment works quickly. It comes back if the conditions return.

StartingDays to weeks after the trigger
An itchy crop of small bumps

Small uniform bumps appear after a hot humid stretch, heavy sweating, or antibiotics or steroids.

SpreadingWeeks 1 to 4
The bumps multiply but stay small

They stay small rather than growing. The itch bothers most people more than the bumps.

ChestUpper backShouldersHairline
StallingThe misdiagnosis window
Acne treatments do not work

Most people treat it as acne here. Benzoyl peroxide, retinoids and antibiotics change little, and antibiotics can make it worse. Often lasts months.

SettlingWeeks 1 to 2 of antifungal treatment
The itch improves first

The itch eases within a week or two, a useful sign the diagnosis was right.

ClearingWeeks 3 to 4 of treatment
The bumps flatten and clear

Keep treating beyond this point. Flat dark or pink marks can remain for months, particularly on deeper skin tones. Recurrence is common in summer, so many use a maintenance wash once or twice a week.

What Makes It Better & Worse

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Fungal acne is not one problem, it is four — skin oil, heat and sweat, the yeast multiplying in the follicle, and the immune reaction that itches. It mostly persists because it is being treated as acne, which acts on none of them.

What is driving yours?

FATPOREOILGLANDBARRIEREPIDERMISDERMIS

Malassezia yeast already lives on almost everyone's skin from puberty onward. It cannot make its own fats, so it feeds on the oil the skin produces, and it sits in the openings of hair follicles where that oil collects.

Conditions shift in the yeast's favor. Heat, humidity, sweat held against the skin by clothing, heavy oils, or a course of antibiotics that clears the bacteria it competes with all give it room to grow.

The yeast multiplies down inside the follicle and breaks skin oils down into fatty acids and other byproducts. This is the step every antifungal treatment is aimed at, and the step acne treatment does nothing about.

The immune system reacts to that activity and the follicle becomes a small, red or brown, itchy bump. Every bump goes through the same process, which is why they all end up the same size. Almost everything on the lists below is pushing on one of these four steps.

What makes it worse

  • Heavy oils and butters They add the fats the yeast lives on and hold heat in.

What helps

  • Shower and change after sweating The habit that prevents recurrence.
  • Breathable clothing, changed promptly Loose cotton or moisture-wicking, not a fitted top.

What makes it worse

  • Staying in damp workout clothes Sweat held against skin is what the yeast needs.
  • Hot, humid weather Cases rise every summer. People who clear in winter flare again.
  • Occlusive clothing, straps and gear The bumps follow what was worn.
  • Long gaps before showering The delay matters more than the sweating.

What helps

  • An antifungal shampoo as a body wash Ketoconazole, selenium sulfide or zinc pyrithione, over the counter.
  • Leaving it on long enough Leave it several minutes before rinsing.
  • A topical antifungal cream Ketoconazole or clotrimazole for limited patches.
  • Prescription antifungal tablets Itraconazole or fluconazole for stubborn or widespread cases.
  • Maintenance once it clears The wash once or twice a week through hot months.
  • Give it two to four weeks The itch settles first, within a week or two.

What makes it worse

  • Treating it as acne Retinoids and salicylic acid target blocked pores. This is not one.
  • Oral antibiotics They cut the bacteria competing with the yeast, so a flare often follows.
  • Oral or strong topical steroids They suppress the immune response holding the yeast back.
  • Stopping treatment early Stop the moment it looks clear and it returns within weeks.

What helps

  • Keeping the routine simple A gentle cleanser, light moisturizer and sunscreen.
  • Sunscreen on exposed areas It stops the dark marks from deepening.

What makes it worse

  • Scratching Turns bumps into marks that last months.
  • Stacking more acne actives A fourth product adds irritation, not clearance.

How These Treatments Work

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Treatments for Fungal Acne (Malassezia Folliculitis) do not all work in the same place. Tap one to see where it acts.

Pick a treatment
Skin basics
BARRIEREPIDERMISDERMISPOREOILGLANDKILLS YEASTKILLS YEASTTAKES AWAY ITS FOODREMOVES THE TRIGGER

The yeast lives on everyone's skin and only causes trouble when it overgrows in oil.

Reaches follicles a wash sits on top of, for widespread or stubborn cases.

This yeast feeds on oils. Rich creams and sunscreens keep feeding it.

Warm, damp skin under clothing is where it overgrows.

The outer film of dead cells and oil. It holds water in and keeps irritants out, and it is thinner than a sheet of paper. Almost every dry, itchy, stinging skin problem starts here.

The outer layer, and the only one anything in a jar reaches. It renews itself constantly: a cell made at the bottom takes about a month to reach the surface and flake off. Most of what a skincare product does, it does here.

The living layer underneath, holding the blood vessels, the nerves and the collagen. It is where lasting change happens and it is hard to reach: most of what is sold for the skin never gets this far.

Over-the-Counter Products

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Everything here you can buy without seeing anyone.

16:9 hero for Ketoconazole. Never cropped: the tone strip and the corner logo depend on the full frame.
Ketoconazole 1% shampoo
Strong evidence
The main over-the-counter treatment, used as a body wash rather than for hair. Lather it over the chest, back, shoulders and hairline in the shower and leave it on several minutes before rinsing, daily for two to four weeks. Rinsing it straight off is the most common reason it seems not to work.
Two Selsun Blue bottles, two Head and Shoulders Clinical Strength bottles and a Vichy Dercos bottle and box16:9 hero for Selenium Sulfide. Never cropped: the tone strip and the corner logo depend on the full frame.
Moderate evidence
An anti-dandruff shampoo used the same way, lathered on the affected areas and left several minutes. A reasonable alternative if ketoconazole irritates or is hard to find. It can be drying and can discolor light-colored hair, so keep it on the body.
Four dandruff shampoo bottles: DHS Zinc, Head and Shoulders Classic Clean, CeraVe Anti-Dandruff and Head and Shoulders Bare16:9 hero for Pyrithione Zinc. Never cropped: the tone strip and the corner logo depend on the full frame.
Moderate evidence
The gentlest of the three anti-dandruff washes, and the easiest to keep using long term. It is a good choice for maintenance once the bumps have cleared, once or twice a week through the hot months. It is usually a little weaker than ketoconazole for clearing an active crop.
Four sulfur acne products: Kate Somerville EradiKate, De La Cruz 10% sulfur ointment, The Ordinary and Thayers16:9 hero for Sulfur. Never cropped: the tone strip and the corner logo depend on the full frame.
Limited evidence
A sulfur wash or soap has some activity against this yeast and is an option if the antifungal shampoos are not tolerated. The evidence in fungal acne specifically is thin. It smells and can be drying on the chest and back.
Three acne wash tubes on white: Differin Deep Cleanser, CeraVe Acne Foaming Cream Cleanser and PanOxylLabeled cutaway diagram of a single skin pore. The epidermis is drawn as a brick-textured layer across the top and the dermis in pink below it, with a yellow oil gland at the base of the pore. Three callout lines point into the pore: decreases dead cells in pore near the opening, kills bacteria at the cluster of bacteria deep in the shaft, and decreases inflammation in the surrounding dermis.
Limited evidence
It has some effect on Malassezia, which is why a few people improve partially on it and then stall. It is not the right tool here, and used as a wash it can leave the chest and back dry and irritated. If it half-works, that is a hint to switch to an antifungal wash rather than to use more of it.
Paula's Choice 2% BHA exfoliant, La Roche-Posay Effaclar cleanser and a CeraVe psoriasis cream pumpLabeled cutaway diagram of a single skin pore, headed Salicylic Acid. The epidermis is a brick-textured band across the top and the dermis is pink below it, with a yellow oil gland at the base of the pore and a small cluster of bacteria inside it. A single dark navy callout line points into the top of the pore: decreases dead cells in pore. There are no other callouts, so the drawing shows one effect where the other ingredient diagrams show two or three.
Weak evidence
It works by clearing blocked pores, and this is not a blocked-pore condition, so it does not act on the yeast. Some people find a wash mildly helpful for the texture. It will not clear the bumps, and scrubs and brushes usually make an irritated chest and back angrier.
Five dark glass tea tree essential oil bottles with glass droppers and one green box on white16:9 hero for Tea Tree Oil. Never cropped: the tone strip and the corner logo depend on the full frame.
Weak evidence
Widely suggested online for fungal acne and not well studied in it. It irritates inflamed skin easily, and it is a common cause of allergic reactions on the chest and back. A proven antifungal wash costs about the same and is available without a prescription.

Prescriptions

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These need a prescription.

16:9 hero for Ketoconazole. Never cropped: the tone strip and the corner logo depend on the full frame.
Ketoconazole 2% cream
Strong evidence
The prescription strength, used as a cream on limited areas such as the jawline, forehead or hairline, or as a shampoo on the body. It is the usual next step when the over-the-counter 1% wash has not been enough. A cream is impractical for a whole back, which is where the wash or tablets take over.
A white cream tube lying on its side on a white background, with a plain white label reading Clotrimazole and a blue swoosh beneath it.
Clotrimazole cream
Moderate evidence
An older antifungal cream, applied twice a day to small patches. It works against this yeast and is inexpensive and widely available. Like any cream, it only suits areas you can realistically cover, so it is a jawline and hairline option rather than a chest and back one.
A white shampoo bottle on a white background, with a plain white label reading Ciclopirox and a blue swoosh beneath it.
Ciclopirox cream or shampoo
Limited evidence
Another antifungal option, used when ketoconazole has irritated the skin or has not worked. There is less published evidence in Malassezia folliculitis specifically than for ketoconazole. It is used the same way, with the shampoo left on for several minutes.
Five adapalene gel 0.1% tubes and boxes lined up on white, including Differin, Effaclar, PanOxyl and NeutrogenaLabeled cutaway diagram of a single skin pore, headed Adapalene. The epidermis is a brick-textured band across the top and the dermis is pink below it, with a yellow oil gland at the base of the pore and a small cluster of bacteria inside it. Three callout lines point in: decreases dead cells in pore and decreases oil production are drawn in dark navy as main effects, and decreases inflammation is drawn in gray as a lesser one.
Weak evidence
A retinoid works on blocked pores, and there is no plug to clear here, so it does not treat the yeast. It is often already in use because the bumps were assumed to be acne. It can stay if you also have genuine acne, but it is not what clears this.
A white metal tube lying at an angle on a white background, white ribbed cap to the left, labeled Clindamycin in black lettering with a teal swoosh curving beneath the word.Diagram: how Clindamycin works in the skin
Weak evidence
A topical antibiotic reduces the bacteria that compete with the yeast, so at best it does nothing here and at worst the bumps get denser. Skin that gets worse rather than better on an acne antibiotic is one of the strongest clues that this is fungal acne.
An amber prescription bottle lying on its side on a white background with a plain white label reading Itraconazole, and six small round white tablets spilled out in front of it.
Itraconazole
Strong evidence
The tablet most often used for stubborn or widespread cases, usually for one to three weeks. It clears extensive chest and back involvement far more reliably than a wash can. It interacts with a long list of other medicines, so the prescriber checks what else you take first.
16:9 hero for Fluconazole. Never cropped: the tone strip and the corner logo depend on the full frame.Diagram: how Fluconazole works in the skin
Strong evidence
The other antifungal tablet used here, often as a weekly dose for a few weeks. It suits people who cannot take itraconazole. Tablets clear the yeast but do not change the heat, sweat and occlusion that brought it on, so a maintenance wash is usually continued afterwards.
16:9 hero for Terbinafine. Never cropped: the tone strip and the corner logo depend on the full frame.Diagram: how Terbinafine works in the skin
Weak evidence
The antifungal tablet used for nail and foot infections, and it is a poor choice here. Malassezia is not reliably killed by it at the doses used by mouth. If an antifungal tablet is being considered, itraconazole or fluconazole are the ones with evidence in this condition.
An amber prescription bottle lying on its side on a white background with a plain white label reading Doxycycline, and six small round white tablets spilled out in front of it.Diagram: how Doxycycline works in the skin
Weak evidence
An antibiotic prescribed for acne is one of the most reliable ways to make this worse, because it clears the bacteria that hold the yeast in check. A crop of itchy bumps appearing a few weeks into or after a course is a classic history. It is not a treatment for fungal acne.

Procedures

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These are done in the office, usually over several visits.

No procedures listed yet.

When to See a Dermatologist

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You do not need a dermatologist on day one — many cases clear with an over-the-counter antifungal wash. Book if a full four-week trial has changed nothing, which is the point to question the diagnosis rather than swap products, and book if the bumps are widespread, painful rather than itchy, returning within weeks of each treatment, or they started after a new medicine. Ask to be seen sooner if you have diabetes or a weakened immune system, if you are on isotretinoin and have a crop of itchy bumps, if there are boils or spreading redness and swelling, or if you have a fever with the rash. This is diagnosed by pattern and by response to treatment, though a bump's contents can be checked under the microscope; the visit gets you confirmation and oral antifungal tablets, which clear stubborn cases but need a prescription.

— Dr. Schwarz, Board Certified Dermatologist

Complications

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Lookalikes

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Acne

This is the mix-up that matters, because the treatments are different. Acne gives you spots of many different sizes, blackheads and whiteheads, and it rarely itches. Fungal acne gives you bumps that are all the same small size, in a sheet, with no blackheads at all, and it usually itches. Plenty of people have both at once, acne on the face and fungal acne on the chest and back.

Folliculitis

Bacterial folliculitis is also inflamed hair follicles, so both give small bumps with pus. Bacterial spots vary more in size, often have a hair coming through the middle, can be sore rather than itchy, and tend to follow shaving or a hot tub. Fungal acne is a sheet of identical bumps that itch, and it is the one that gets worse rather than better on antibiotics.

Keratosis Pilaris

Both give a field of small, same-sized bumps. Keratosis pilaris sits on the outer upper arms, thighs and cheeks, feels rough like sandpaper, has no pus, does not itch much, and has usually been there for years without changing. Fungal acne appears over days to weeks, itches, and can have a pinpoint of pus on top.

Myths

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  • "Fungal acne is a type of acne." It is not acne. Acne is blocked pores with blackheads, whiteheads and spots of varying sizes. This is yeast inflaming hair follicles — uniform bumps, no blackheads, an itch. The name is a search term, not a diagnosis.
  • "It means my skin is dirty or I have an infection I caught." Malassezia lives on nearly everyone's skin. Fungal acne is that ordinary organism overgrowing when conditions favor it. Not contagious, not about hygiene.
  • "Antibiotics will clear it." Antibiotics reliably make it worse, because they cut the bacteria that compete with the yeast. A rash that flared during or after an antibiotic course is a strong hint.
  • "You have to avoid every oil and fatty ingredient forever." The biology is real — Malassezia needs external fats of certain sizes. The ingredient blacklists online go far beyond what has been shown on human skin. Skip heavy occlusive products on the chest and back while it is active; purging your whole routine is not necessary.
  • "If it looks clear, you can stop treatment." Stopping the moment it clears is the commonest reason it returns within weeks. Keep treating past clearing, and many people keep a maintenance wash going.
  • "It happens because you do not exfoliate enough." Exfoliating does nothing to the yeast and irritates skin that is already inflamed. Scrubs and brushes make the chest and back angrier.
  • "Tea tree oil or apple cider vinegar will handle it." Neither has good evidence here, and both irritate inflamed skin. A proven antifungal wash is cheap and needs no prescription.

Questions Patients Ask

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How do I know if it is fungal acne rather than acne?

Three things separate them. Fungal acne itches; acne usually does not. Fungal acne has no blackheads or whiteheads. And the bumps are all the same small size, in a sheet across the chest, shoulders, upper back and hairline, not a mix of sizes on the face. A start after antibiotics, steroids or a hot sweaty stretch adds to the case.

Can I have both at the same time?

Yes, often. Many people have ordinary acne on the face and Malassezia folliculitis on the chest and back, treated in parallel. A routine aimed only at acne leaves half the problem untouched.

Is it contagious?

No. The yeast already lives on almost everyone's skin. Nobody gave it to you and you cannot pass it on.

Do I really need fungal-acne-safe products?

The idea rests on something real — this yeast cannot make its own fats and takes them from its surroundings. But the ingredient lists online are more confident than the evidence. Avoid heavy oils, butters and occlusive products on the affected areas while it is active, and treat the yeast directly rather than rebuilding a routine.

Why does it keep coming back?

Because the conditions return — heat, sweat and occlusion, usually every summer. That is not treatment failure. Most people who stay clear use the antifungal wash once or twice a week through the warm months.

Will it leave marks or scars?

Scars are uncommon. Flat dark marks are very common, and because the bumps arrive in large numbers they cover a wide area and take months to fade, particularly on deeper skin tones. Not scratching and treating early reduce them most, and daily sunscreen helps them fade faster.

References

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