Majocchi’s granuloma is a rare fungal infection that pushes deeper than ordinary skin fungus, invading the dermis and sometimes the tissue beneath it. In more than 95 percent of cases, the culprit is a dermatophyte, the same type of fungus responsible for ringworm and athlete’s foot, with Trichophyton rubrum identified as the most frequent species involved.1PubMed Central. Majocchi’s granuloma: current perspectives What makes this condition distinctive, and often frustrating for patients, is that a superficial fungal problem has found its way into deeper layers of skin where topical creams cannot easily reach it.
How Fungus Gets Where It Should Not Be
Dermatophytes normally live only on dead tissue: the outermost layer of skin, hair, and nails. They feed on keratin, the protein that makes up those structures, and they rarely breach the body’s deeper defenses. Majocchi’s granuloma happens when that boundary is broken. When the fungus pushes past the surface, keratin fragments, dead cells, and the microorganisms themselves spill into the dermis, triggering an inflammatory response.2Archives of Clinical Pediatrics. Majocchi Granuloma in the Face of an Immunocompetent Child: A Case Report The body walls off the invaders with clusters of immune cells, forming the granulomas that give the condition its name. The result is a collection of firm, sometimes tender bumps that look nothing like the flat, scaly patches most people associate with fungal infections.
The infection typically takes root around hair follicles. A follicle acts like a channel running from the skin surface down into the dermis, and once fungus colonizes that channel, it has a direct route deeper than it could otherwise travel. This is why the condition shows up most often on areas of the body with abundant hair follicles and where those follicles are subjected to repeated physical disruption.
Who Gets It and Why
Two broad groups of people develop Majocchi’s granuloma, and the way the disease behaves in each group can look quite different. In otherwise healthy people, the infection tends to appear on the legs, forearms, or other areas prone to shaving or minor skin trauma. Women who shave their legs are especially susceptible, and the condition is more common in developing countries and in people who already have a preexisting superficial fungal infection on nearby skin.3PubMed Central. Majocchi’s Granuloma – The Great Mimicker: A Case Report A razor nicks the follicle, creating a tiny wound just deep enough for fungus already living on the skin surface to gain entry.
The second group includes people whose immune systems are weakened, whether by medication, organ transplantation, HIV, diabetes, or other conditions. In these patients, the infection can spread more widely and show up in less typical locations because the immune system is less able to contain the fungus at the surface. A review of cases in organ transplant recipients found enough documented instances to make the condition a recognized risk in that population.4PubMed. Majocchi’s granuloma in solid organ transplant recipients A Korean case series also confirmed that immune status affects where on the body the infection appears and what it looks like clinically.5PubMed. The influence of immune status, age, and sex on Majocchi granuloma: a review of 52 cases from a tertiary level hospital and published Korean cases in literature
Occasionally, the infection is not caused by a dermatophyte at all. Species from the Aspergillus and Phoma genera have been detected as causes of Majocchi’s granuloma, though these cases are rare and tend to occur in immunocompromised patients.6Oxford Academic (Medical Mycology). Majocchi’s granuloma: a symptom complex caused by fungal pathogens
The Topical Steroid Problem
One risk factor deserves its own discussion because it is both common and preventable. The single most frequent predisposing factor in published case reports, appearing in roughly 55 percent of cases, is the use of topical steroid creams on a rash that was never properly tested for fungus.7PubMed Central. Majocchi’s granuloma: current perspectives The scenario plays out the same way over and over: a patient develops a red, scaly patch. They either buy a steroid cream over the counter or are prescribed one without a quick lab check. The steroid suppresses the immune response in the skin, temporarily reducing redness and itch, which makes the rash look like it is improving. Meanwhile, the fungus, no longer held in check by local immune defenses, penetrates deeper.
The rise of over-the-counter topical steroid availability has contributed to a growing number of Majocchi’s granuloma cases in recent years.8PubMed Central. Deep Dermal Dilemma: A Case Report on Majocchi’s Granuloma After Topical Steroid Use This is a particular problem in countries where potent steroid creams can be purchased without a prescription and where patients may apply them to fungal infections for weeks or months before seeking further care. Even in clinical settings, a steroid may be started empirically for what looks like eczema or contact dermatitis without performing a simple potassium hydroxide (KOH) scraping to check for fungal elements first.
Biologic medications used for conditions like psoriasis can compound the risk. One documented case involved a patient on adalimumab, a biologic that suppresses part of the immune system, who also applied topical steroids. The combination created conditions so favorable for fungal invasion that numerous tender nodules erupted within a month of the biologic injection.9PubMed Central. A Case Report of Majocchi’s Granuloma Associated with Combined Therapy of Topical Steroids and Adalimumab
What It Looks Like on the Skin
The typical presentation is an irregular, reddish, scaly plaque studded with small bumps that cluster around hair follicles. These bumps can range from tiny pus-filled spots to firm nodules, and they usually appear on the trunk or extremities.10PubMed Central. Majocchi’s Granuloma – The Great Mimicker: A Case Report On the legs, the condition can look like a stubborn case of folliculitis, the sort of bumpy rash sometimes seen after shaving. On the arms or trunk, it may resemble a spreading ringworm patch that has developed lumps.
The appearance shifts depending on a person’s immune status. Healthy individuals tend to get a localized cluster of perifollicular papules and pustules, often in a ring or arc that loosely follows the contour of the area where trauma occurred. In immunocompromised patients, the infection can be more widespread, with deeper nodules and less of the classic ring-shaped pattern. The lesions can be tender or even painful, especially when they form subcutaneous nodules. Some patients report months of gradually worsening symptoms before seeking care, partly because earlier attempts at treatment with topical antifungal or steroid creams seemed to partially help before the infection returned worse.
Why It Is So Often Misdiagnosed
Majocchi’s granuloma has earned a reputation as a mimic. Because it can look like bacterial folliculitis, eczema, contact dermatitis, granuloma annulare, or even cutaneous lymphoma, the diagnosis is frequently delayed. Facial cases are the worst offenders: the condition on the face has been called the most frequently misdiagnosed cutaneous fungal infection, and the diagnostic delay for affected patients can be substantial.11PubMed Central. Majocchi’s Granuloma – The Great Mimicker: A Case Report On the face, clinicians are less likely to suspect a dermatophyte infection because ringworm on the cheek or chin is unusual, and the nodular pattern does not match the classic flat, scaly ring that screams “fungus.”
The misdiagnosis loop can be self-reinforcing. A patient presents with a red, bumpy rash. The clinician treats for the most likely diagnosis, often bacterial infection or inflammation, with antibiotics or steroids. The rash does not improve (or briefly improves due to the anti-inflammatory effect of steroids, then worsens). The patient returns, and a second empirical treatment is tried. By the time someone orders a biopsy or fungal culture, weeks or months have passed and the infection has become more entrenched. One case report described a patient on biologic therapy whose nodules “responded poorly to bacterial folliculitis treatment” before repeated biopsies finally confirmed the fungal cause.12PubMed Central. A Case Report of Majocchi’s Granuloma Associated with Combined Therapy of Topical Steroids and Adalimumab
How Doctors Confirm the Diagnosis
The most reliable way to diagnose Majocchi’s granuloma is a skin biopsy, usually a punch biopsy, sent for both histopathology and fungal culture. Under the microscope, the hallmark finding is a deep folliculitis with fungal elements visible in and around the hair shaft. Special stains, particularly periodic acid-Schiff (PAS) staining, can highlight fungal spores and hyphae that might otherwise be overlooked in standard tissue slides.13Actas Dermo-Sifiliográficas. Majocchis Granuloma Caused by Trichophyton mentagrophytes in 2 Immunocompetent Patients Molecular analyses can help identify the exact species when the culture is ambiguous, though this is more relevant to research settings than to routine clinical care.
A simple KOH preparation of skin scrapings, the bedside test used to diagnose athlete’s foot, can suggest a fungal cause but cannot confirm deep invasion on its own. The irony is that the majority of cases arise specifically because that KOH test was never done in the first place: a quick scraping before prescribing a steroid cream would have revealed fungal elements and prevented the steroid from being applied.14PubMed Central. Majocchi’s granuloma: current perspectives For clinicians, the takeaway is straightforward. Any red, scaly rash that is about to receive a steroid should be scraped first, especially if it has follicular papules or a ring-shaped border.
Treatment Requires Systemic Antifungals
Because the fungus has invaded below the skin surface, topical antifungal creams applied to the outside often cannot reach the infection effectively.15DermNet. Majocchi granuloma This is the key difference between Majocchi’s granuloma and a straightforward ringworm patch. Ringworm sits on the surface where a cream can contact it directly. Majocchi’s granuloma sits in the dermis, wrapped around and inside hair follicles, shielded from anything you apply to the skin’s exterior.
Oral antifungal medications are the standard treatment. Terbinafine is the most commonly used first-line agent, typically given daily for a course lasting several weeks to a few months depending on the severity and the patient’s immune status. One well-documented case involving a patient on biologic therapy required 12 weeks of terbinafine, after which both the skin nodules and coexisting dystrophic nail lesions improved dramatically.16PubMed Central. A Case Report of Majocchi’s Granuloma Associated with Combined Therapy of Topical Steroids and Adalimumab Itraconazole is another commonly chosen oral antifungal, particularly when terbinafine is not tolerated or when the causative species is not a dermatophyte. Griseofulvin, an older antifungal, is sometimes used but generally regarded as less effective for deep infections.
If an immunosuppressive medication contributed to the infection, clinicians often need to weigh whether to pause or adjust that medication during treatment. In the adalimumab case mentioned earlier, the biologic was withheld during the antifungal course, which likely aided recovery. For transplant recipients, adjusting immunosuppression is more complicated because the risk of organ rejection has to be balanced against the need to let the immune system help clear the fungus.
When Children Are Affected
Majocchi’s granuloma is not exclusively an adult disease. Cases have been documented in children, including immunocompetent children with no obvious risk factors beyond minor skin trauma. One case report described the infection appearing on a child’s face, an unusual location that added diagnostic difficulty because facial fungal infections are not at the top of most pediatricians’ lists.17Archives of Clinical Pediatrics. Majocchi Granuloma in the Face of an Immunocompetent Child: A Case Report The lesson from pediatric cases is that early diagnosis and treatment at adequate doses and for a sufficient duration are critical to a good outcome. Children may present atypically simply because the condition is not expected in their age group, leading to diagnostic delays similar to those seen with facial cases in adults.
Dosing systemic antifungals in children requires attention to weight-based calculations and monitoring for side effects, particularly liver enzyme changes that oral antifungals can cause. Pediatric cases generally respond well when treated promptly, but a delayed diagnosis can mean a longer and more involved treatment course.
Preventing the Condition
Because the two biggest modifiable risk factors are shaving-related skin trauma and inappropriate use of topical steroids, prevention mostly comes down to practical skin care and avoiding misapplied medication. If you shave areas where you have had ringworm or athlete’s foot, treating the surface fungal infection fully before resuming shaving reduces the chance of driving organisms deeper. Keeping razors clean and replacing them regularly is basic but relevant.
The steroid issue is harder to address at an individual level because many people do not realize that the cream making their rash look better is actually making the underlying problem worse. If you have a persistent red, scaly, or ring-shaped rash that is not responding to over-the-counter hydrocortisone or seems to come back after a brief improvement, it is worth asking a clinician to do a skin scraping before continuing steroid use. That 30-second test can prevent weeks of misguided treatment and a deeper infection that requires oral medication.
For immunocompromised patients, awareness is the main tool. If you are on long-term steroids, biologics, or other immunosuppressive medications, any new crop of bumps or nodules that does not respond quickly to initial treatment warrants a closer look. Mentioning your medication history to a dermatologist can shift their differential diagnosis early enough to avoid the misdiagnosis loop that so many Majocchi’s granuloma patients experience.
Unusual Causative Organisms
While Trichophyton rubrum accounts for the vast majority of cases, other dermatophyte species can cause Majocchi’s granuloma as well. Trichophyton mentagrophytes has been identified in cases affecting immunocompetent patients, including instances where the infection presented in clinically typical fashion and responded to standard systemic antifungal therapy.18Actas Dermo-Sifiliográficas. Majocchis Granuloma Caused by Trichophyton mentagrophytes in 2 Immunocompetent Patients The non-dermatophyte causes, Aspergillus and Phoma species, tend to appear in severely immunocompromised patients and may require different antifungal agents because these organisms do not always respond to the drugs used for dermatophyte infections.19Oxford Academic (Medical Mycology). Majocchi’s granuloma: a symptom complex caused by fungal pathogens Identifying the species through culture matters in these cases because the treatment choice depends on it. A granuloma caused by Aspergillus may need voriconazole or another mold-active antifungal rather than terbinafine, which is primarily effective against dermatophytes.