Fungal acne (Malassezia folliculitis): signs and antifungal treatment
Fungal acne is not acne but a yeast called Malassezia overgrowing in the hair follicles: itchy, same-size bumps in clusters that acne products don't clear. An antifungal dandruff shampoo used as a wash is the usual first step.
Longing for skin that stays smooth and itch-free, even after heat and sweat?
Treat the yeast, not the acne. Lather a ketoconazole or selenium sulfide dandruff shampoo on the bumps in the shower, rinse well, and once it settles keep one wash a week. Shower soon after workouts and go easy on heavy, oily creams.
The hard part is knowing it's fungal at all: fungal and regular acne can show up together, and a mirror won't sort them. acne.today's report includes a fungal acne lookalike check, along with how severe things are on the 0 to 4 dermatology scale and the probable trigger, all from a quick face scan and some questions. It looks at your photo once and then deletes it.
Check if mine is fungal on acne.todayDoctors call it Malassezia or Pityrosporum folliculitis, a yeast overgrowth in hair follicles: itchy bumps, uniform in size, on the chest, back and forehead. It's treated with antifungals like ketoconazole, not with regular acne products.
Last reviewed · 4 medical sources, listed below
Fungal acne vs regular acne
Specimen A vs specimen B
| Attribute | Specimen AFungal acne | Specimen BRegular acne |
|---|---|---|
| Cause | Malassezia yeast multiplying inside hair follicles | Hair follicles blocked with oil, dead skin and bacteria |
| Uniform appearance | Clusters of small bumps, all about the same size and shape | A mix of blackheads, whiteheads, pustules, nodules and cysts |
| Itching | Usually itchy; can burn | Usually not itchy |
| Common locations | Chest, upper back, shoulders, upper arms, neck; forehead, cheeks and chin | Often the middle of the face |
| Blackheads and whiteheads | No blackheads; a whitehead now and then | Common |
| Triggers | Heat, humidity, sweat, tight clothes, antibiotics | Oil, dead skin and bacteria clogging pores |
| Response to acne products | No real change; antibiotics can make it worse | Acne products are the standard treatment |
| Treatment | Antifungal wash, cream or pills | Benzoyl peroxide, a retinoid or other acne products |
Deep, painful lumps under the skin are a different problem again. That is cystic acne, the most severe form of regular acne, and it needs a doctor rather than an antifungal.
Fungal or regular? Find out from a photo
Not sure which one you have? The acne.today analysis reads a photo of your face and gives you:
- Your severity, graded on the dermatologist 0–4 scale
- Your likely top cause
- A personal morning and evening routine
30-second face scan + short quiz · photo analysed once, then deleted
AI guidance, not a medical diagnosis.- Severity grade (0–4)
- Example: grade 2
- Likely top cause
- Example: yeast in the follicles, or clogged pores
- Your routine
- Morning and evening steps
What fungal acne is
The condition is an infection of the hair follicles caused by Malassezia, a yeast that lives on almost everyone's skin. It means the bumps come from yeast, not bacteria, so standard acne treatments don't clear it. The cause is yeast getting into damaged or blocked follicles and multiplying.
- Uniform appearance
- Small red bumps (papules) in clusters, similar in size and shape. Some turn into whiteheads (pustules).
- Itching
- The main sign that sets it apart. In a review of 15 studies, 71.7% of people with it had itching.
- Common locations
- Chest, upper back, shoulders, upper arms and neck. On the face: forehead, cheeks and chin. If yours sit mostly on the forehead and hairline, this guide to fungal acne on face walks through its four signs.
What causes fungal acne
A trigger is anything that lets Malassezia multiply or get into a follicle. It means a normally harmless yeast grows out of balance. The risk is highest in teens and young adult men, whose skin makes more oil.
- Yeast overgrowthMalassezia feeds on skin oil (sebum) and grows fast on hot, damp or sweaty skin.
- Climate & lifestyleHot, humid weather, heavy sweating, and tight clothes or gear that trap sweat on the skin.
- Skincare & makeupHeavy, oily products that cover the skin can add to flares.
- AntibioticsThey lower the good bacteria on your skin, which lets yeast overgrow. Steroid medicines are linked to it too.
- Weakened immune systemConditions or medicines that suppress immunity, such as after an organ transplant, make yeast harder to control.
How fungal acne is diagnosed
Diagnosis is a skin check by a dermatologist or primary care doctor. It means the doctor asks about your symptoms, looks at the bumps and may scrape a few skin cells to look for Malassezia under a microscope. A Wood's lamp (a small black light) can also help, though it can't confirm the yeast on its own.
Not sure which one you have? A photo analysis of your skin can point to the likely cause first.
Antifungal treatment
Antifungal treatment is medicine that targets yeast instead of bacteria. It means the yeast needs its own product. The aim of antifungal treatment is to bring Malassezia back to normal levels. For the order to try things in, this step-by-step guide on how to get rid of fungal acne lays out each stage.
Over-the-counter options
Dandruff shampoos with ketoconazole or selenium sulfide work as a body wash on the chest, back and shoulders. For mild cases, an antifungal cream used daily is another start.
- Lather the dandruff shampoo on the bumps in the shower.
- Rinse it off well, and quickly if you use it on your face.
- Once it settles, a weekly selenium sulfide wash can help stop it coming back.
Prescription options
Ask your doctor about a stronger ketoconazole cream or shampoo, econazole cream, or antifungal pills such as fluconazole or itraconazole. In a review of 15 studies, pills cleared it most often (92%, versus 82% for creams), but they can strain the liver and interact with other medicines, so they are not for everyone. For repeat flares, a doctor may suggest long-term treatment.
Avoid standard acne fixes
Antibiotics, a common acne treatment, cut the good bacteria on your skin and let yeast overgrow, so they can make the rash worse. Other acne treatments don't clear yeast either. The two can happen at the same time.
See a dermatologist if home antifungal washing hasn't helped within a few weeks, if it spreads or hurts, or if you have a weakened immune system.
How to prevent fungal acne
Prevention is a set of habits that keep yeast from multiplying. It means fewer flares, since the rash often comes back. The timing of prevention matters most in hot, humid months and after workouts.
- Environment
- Shower soon after you work out, and in hot, humid weather.
- Clothing
- Wear loose clothes in the heat and for exercise. Change out of workout clothes right away.
- Medications
- Tell your doctor if the bumps started after antibiotics or steroids.
- Skin factors
- Go easy on heavy, oily moisturizers and sunscreens. Keep up a weekly antifungal wash.
Fungal and regular acne can show up together, so the usual advice on how to prevent acne still helps.
Ingredient check: what may feed Malassezia
Malassezia is a fat-loving (lipophilic) yeast. It splits skin oil into fatty acids it feeds on. Labs grow it on media made with olive oil, and it grew even better on an artificial skin oil that includes myristic acid (C14).
Reader questions
What people ask most, answered plainly.
How do I tell if my acne is fungal?
Check three things: are the bumps all the same size, do they itch, and are they mostly on your chest, back or forehead? If yes, and acne products haven't helped, yeast is a real possibility. A dermatologist can confirm it with a skin scraping.
Can you pop yeast bumps?
Better not. The yeast sits inside the follicle, so squeezing doesn't remove the cause. An antifungal wash is what treats it.
Can salicylic acid clear yeast bumps?
Not on its own. The yeast doesn't respond to the usual antibacterial and anti-inflammatory acne treatments. It needs an antifungal, like a wash with ketoconazole or selenium sulfide shampoo.
Can miconazole be used to treat Malassezia folliculitis?
It's an antifungal, but in one small study miconazole cream alone didn't clear the bumps, while ketoconazole and antifungal pills did better. Ask a pharmacist or your doctor.
What else looks like these yeast bumps?
Regular acne is the big one, and the two can show up together. Bacterial folliculitis, steroid acne and rosacea can look much the same.
Sources
- Chalupczak NV, Lipner SR. Malassezia Folliculitis: An Underdiagnosed Mimicker of Acneiform Eruptions. J Fungi (Basel). 2025;11(9):662. PMID 41003208
- Green M, Feschuk AM, Kashetsky N, Maibach HI. Clinical characteristics and treatment outcomes of Pityrosporum folliculitis in immunocompetent patients. Arch Dermatol Res. 2023;315(6):1497–1509. PMID 36517586
- Henning MAS, Hay R, Rodriguez-Cerdeira C, et al. Position statement: Recommendations on the diagnosis and treatment of Malassezia folliculitis. J Eur Acad Dermatol Venereol. 2023;37(7):1268–1275. PMID 36912427
- Suzuki K, Inoue M, Takayama K, et al. Development of Artificial-Sebum-Containing Leeming and Notman Agar Medium to Enhance the Growth of Malassezia. Mycopathologia. 2022;187(4):393–396. PMID 35610393
Last reviewed
This page is general information, not a diagnosis. See a dermatologist if home antifungal washing hasn't helped within a few weeks, if it spreads or hurts, or if you have a weakened immune system.