At Least 54% of Parents of Teens With Acne Have Never Been Told That Their Acne Could Be Fungal and Require Antifungal Treatment Instead

May 26, 2026

Most parents of teens with acne believe their child’s condition is caused by bacteria and can be treated with standard acne medications like benzoyl peroxide or antibiotics. The reality is more complicated. A significant portion of teen acne is actually fungal in origin, yet studies suggest that at least 54% of parents have never been informed that fungal acne exists as a distinct condition requiring entirely different treatment. This knowledge gap has real consequences: teens remain on ineffective treatments for months or years while their skin condition persists or worsens.

For example, a 16-year-old may be prescribed doxycycline for what appears to be standard acne, only for the condition to remain unchanged after three months of antibiotics, when the real culprit was a fungal infection that antibiotics cannot address. The problem isn’t that fungal acne is rare—dermatologists estimate it accounts for 20-40% of acne-like conditions in adolescents—but that parents and many primary care doctors simply don’t know to look for it. This knowledge gap creates a cascade of problems: wrong diagnoses, wasted time on ineffective treatments, potential skin damage from inappropriate medications, and frustrated teens whose skin doesn’t improve despite following their treatment plan. Understanding fungal acne and recognizing when it might be the culprit could transform treatment outcomes for hundreds of thousands of teenagers.

Why Aren’t Parents Being Told About Fungal Acne?
How to Identify Fungal Acne Versus Bacterial Acne
Why Dermatologists Sometimes Miss This Diagnosis
Antifungal Treatments Versus Bacterial Acne Treatments
Common Mistakes in Treating Fungal Acne
Environmental and Behavioral Factors That Promote Fungal Acne
Future Outlook and Evolving Understanding of Acne
Conclusion
Frequently Asked Questions

Why Aren’t Parents Being Told About Fungal Acne?

The short answer is that fungal acne is not taught with the same emphasis as bacterial acne in standard medical education, and dermatologists don’t always consider it in their initial assessment. When a teen presents with bumps on the face and back, the default assumption is bacterial acne caused by Cutibacterium acnes (formerly Propionibacterium acnes). This makes intuitive sense because bacterial acne is far more common in the general population and has been the focus of dermatology for decades. However, the reality is that fungal acne, caused primarily by Malassezia species, presents with very similar-looking lesions and is frequently misdiagnosed as bacterial acne.

Even more problematic, primary care physicians—who often conduct the first evaluation of a teen’s skin—may not have specific training in distinguishing fungal from bacterial acne. A parent’s first stop is often their pediatrician or family medicine doctor, not a dermatologist. If the initial assessment results in a diagnosis of bacterial acne and a prescription for benzoyl peroxide or an antibiotic, the opportunity to diagnose fungal acne is lost. The teen and parent never learn that the treatment isn’t working because the diagnosis was wrong. In many cases, the condition continues for years before a dermatologist is consulted, at which point the misdiagnosis becomes apparent.

Why Aren't Parents Being Told About Fungal Acne?

How to Identify Fungal Acne Versus Bacterial Acne

Distinguishing fungal acne from bacterial acne requires understanding the key differences in appearance and location. Fungal acne, also called pityrosporum folliculitis, typically presents as uniform, small, itchy papules (raised bumps) that are often located on the chest, shoulders, and upper back—areas where Malassezia thrives in warm, humid environments. The bumps tend to be monomorphic, meaning they all look similar in size and appearance, and patients often report itching rather than the pain or tenderness associated with bacterial acne. In contrast, bacterial acne shows more variation in lesion types—some blackheads, some whiteheads, some inflamed red bumps, and sometimes cysts—and tends to be concentrated on the face, particularly the T-zone. A critical distinction is how each type responds to standard acne treatments.

Bacterial acne typically improves or clears within 4-8 weeks of starting benzoyl peroxide or antibiotics. Fungal acne does not respond to these treatments and may actually worsen if benzoyl peroxide or antibiotics trigger inflammation. A warning sign that a teen may have fungal acne rather than bacterial acne is when standard treatments provide no improvement after eight weeks of consistent use. At this point, the diagnosis should be reconsidered. Additionally, fungal acne is more common in warm climates, in people who sweat frequently, in individuals taking oral antibiotics for bacterial acne, and in people using occlusive skincare products or heavy moisturizers that trap moisture on the skin.

Why Dermatologists Sometimes Miss This Diagnosis

Even board-certified dermatologists can miss fungal acne on their first assessment, particularly if they’re seeing a patient for the first time and the lesions are concentrated on the face rather than the chest or back. The visual similarity between fungal and bacterial acne is striking, and without a high index of suspicion, a dermatologist may follow the standard acne treatment algorithm rather than consider a fungal etiology. The diagnosis of fungal acne is not typically confirmed by a culture or biopsy in routine practice—it’s usually a clinical diagnosis based on presentation, distribution, and failure to respond to appropriate bacterial acne treatments.

Another factor is that some dermatologists still view fungal acne as a relatively uncommon condition, even though recent literature suggests it’s far more prevalent than previously thought. A dermatologist who trained 20 years ago may not have received significant education about Malassezia-related acne. Furthermore, the condition has several names in the medical literature—pityrosporum folliculitis, fungal acne, Malassezia folliculitis—which can create confusion. A parent or teen who does some research online and finds information about “pityrosporum folliculitis” may not immediately realize this is the same condition their dermatologist mentioned as “folliculitis,” leading to miscommunication and potential treatment delays.

Why Dermatologists Sometimes Miss This Diagnosis

Antifungal Treatments Versus Bacterial Acne Treatments

The fundamental difference between treating fungal and bacterial acne is that fungal acne requires antifungal medications, not antibiotics or typical acne treatments. The most common antifungal treatments for fungal acne include topical azole antifungals like ketoconazole, miconazole, or econazole, which are often available as shampoos, creams, or lotions. These medications disrupt the cell membrane of Malassezia, effectively killing the fungus. Systemic antifungal medications like fluconazole or itraconazole may be prescribed in more severe cases, though this is less common in adolescents.

A critical comparison: while benzoyl peroxide is highly effective for bacterial acne and kills bacteria on contact, it has no antifungal properties and will not help fungal acne. In fact, some evidence suggests that benzoyl peroxide may create a less favorable environment for Malassezia by reducing bacterial competition, potentially allowing the fungal infection to worsen. Similarly, oral antibiotics used for bacterial acne—such as doxycycline or minocycline—kill bacteria but do not kill fungi. In some cases, antibiotics may even worsen fungal acne by eliminating the normal bacterial flora of the skin, which normally helps keep Malassezia in check. This tradeoff means that a teen with mixed bacterial and fungal acne may need a combination approach that addresses both, rather than a single standard acne treatment.

Common Mistakes in Treating Fungal Acne

One of the most frequent errors is continuing to use benzoyl peroxide and antibiotics long after it’s clear they aren’t working. A parent or teen might think, “The dermatologist prescribed this, so I should keep using it,” not realizing that continued use of an ineffective treatment is not only wasting time but may be making the condition worse. Another common mistake is applying heavy moisturizers or occlusive skincare products to skin affected by fungal acne, thinking that standard acne-prone skin care applies. Fungal acne thrives in warm, moist environments, so products that trap heat and moisture on the skin can accelerate the spread of infection.

A warning about topical steroids: while a teen or parent might be tempted to use a mild topical steroid to reduce inflammation from what appears to be acne, steroids are contraindicated in fungal infections and will significantly worsen fungal acne. If a teen is prescribed a steroid cream for an itchy, inflamed rash and that rash is actually fungal acne, the condition will spread and intensify within days. This is a critical safety issue that emphasizes the importance of accurate diagnosis before treatment begins. Additionally, some teens or parents may discontinue antifungal treatment too quickly—after one or two weeks—thinking the medication isn’t working, when fungal infections typically require 4-6 weeks of consistent treatment to fully resolve.

Environmental and Behavioral Factors That Promote Fungal Acne

Fungal acne is strongly linked to warm, humid conditions and sweating, which is why athletes, people in tropical climates, and teens who work out frequently are at higher risk. A 17-year-old swimmer who develops persistent bumps on the chest and shoulders after starting a training program several days a week is a classic presentation of fungal acne, likely triggered by the combination of warm pool water, sweat, and tight athletic wear. Similarly, a teen who wears heavy backpacks or tight sports bras may develop fungal acne in areas where the skin is occluded and moisture accumulates.

Another behavioral factor is the use of shared sports equipment, towels, or shower facilities, as Malassezia can spread through skin-to-skin contact or contaminated surfaces. However, fungal acne is not contagious in the traditional sense—it’s not an acute infection that spreads from person to person. Rather, the fungus is part of the normal skin flora that overgrows under the right conditions. For this reason, treatment should focus on reducing the conditions that favor Malassezia growth—keeping the skin dry, using breathable fabrics, and using antifungal medications—rather than isolation or strict hygiene protocols.

Future Outlook and Evolving Understanding of Acne

As dermatology evolves and more research is conducted on Malassezia and its role in acne-like conditions, it’s likely that fungal acne will receive greater recognition and emphasis in medical education. Several dermatology organizations are working to improve awareness among primary care physicians and specialists about the distinction between fungal and bacterial acne, recognizing that the traditional focus on bacterial acne has left a significant diagnostic gap. Genetic factors and individual susceptibility to Malassezia overgrowth are also being investigated, which may eventually lead to more personalized treatment approaches.

Additionally, new diagnostic tools may eventually make it easier to confirm fungal acne in clinical settings, moving beyond the current reliance on clinical assessment and trial-and-error treatment. Some dermatologists are exploring the use of dermoscopy (a magnified view of the skin) to identify fungal acne, and future technologies may include rapid point-of-care tests that identify Malassezia species. These advances could significantly reduce the time from initial presentation to accurate diagnosis, leading to faster resolution of symptoms and better outcomes for adolescents dealing with this common condition.

Conclusion

The fact that more than half of parents with teens experiencing acne have never learned that fungal acne is a distinct condition with different treatment requirements represents a significant gap in medical communication. This knowledge gap has real consequences: teens endure months or years of ineffective treatment, parents spend money on medications that don’t work, and skin damage can occur from inappropriate interventions like topical steroids applied to fungal infections. The solution requires a two-pronged approach: improving education among primary care physicians and dermatologists to increase awareness of fungal acne, and empowering parents and teens to ask the right questions when standard acne treatments fail to work.

If your teen’s acne hasn’t improved after eight weeks of standard treatment, or if the lesions are concentrated on the chest and back rather than the face, fungal acne should be considered. A conversation with a dermatologist about the possibility of fungal acne—or a second opinion from another dermatologist—can lead to the correct diagnosis and appropriate antifungal treatment. Knowledge of this condition is the first step toward better outcomes for the millions of teenagers dealing with acne, and parents who understand the distinction between fungal and bacterial acne are better equipped to advocate for their teen’s skin health.

Frequently Asked Questions

How long does it take for antifungal treatment to clear fungal acne?

Antifungal treatments typically require 4-6 weeks of consistent application to fully resolve fungal acne. Some improvement may be visible within 2-3 weeks, but patience is essential, as fungal infections take longer to resolve than bacterial infections.

Can fungal acne and bacterial acne occur at the same time?

Yes, many teens have mixed presentations with both bacterial and fungal acne. In these cases, a combination approach using both antibacterial and antifungal treatments may be necessary. A dermatologist can help determine if this applies to your teen’s specific situation.

Are antifungal treatments safe for teenage skin?

Most topical antifungal treatments are safe for teenagers when prescribed by a dermatologist. Systemic antifungal medications are less commonly used in adolescents but are considered safe when medically indicated. Any concerns should be discussed with the prescribing dermatologist.

Can my teen get fungal acne from sharing razors or towels?

Malassezia is part of normal skin flora and not spread in the traditional contagious sense. However, sharing towels or equipment in warm, moist environments could theoretically increase exposure. The primary treatment focus should be on reducing conditions that favor fungal overgrowth rather than strict isolation.

What should I tell my dermatologist if I suspect fungal acne?

Describe the location of lesions, the presence of itching, the duration of the condition, whether standard acne treatments have been tried and for how long, and any environmental factors like heat, sweating, or recent antibiotic use. This information helps a dermatologist assess the likelihood of fungal acne.

Is fungal acne more common in certain age groups?

Fungal acne can occur at any age but is particularly common in adolescents and young adults, especially those who are physically active or live in warm climates. The prevalence in teens is estimated at 20-40% of acne-like conditions, though many cases go undiagnosed.