Ringworm is one of the most misunderstood skin infections in sports. The name implies a parasite, which leads people to look for the wrong treatment, wait for symptoms that may never appear in the classic form, and underestimate how easily it spreads. Ringworm has nothing to do with worms. It is a fungal infection caused by the same group of fungi responsible for athlete's foot and jock itch. Understanding what you are actually dealing with is the first step toward treating it correctly and stopping it from spreading.

Ringworm is common in contact sports. Wrestlers, BJJ practitioners, MMA fighters, and anyone who trains on shared mats or has close skin-to-skin contact with other athletes are at elevated risk. It spreads easily through direct contact, shared items, and contaminated environments, and it can look different enough in different people that it is frequently missed or misidentified until it has already spread.

What Ringworm Actually Is

Ringworm is a fungal skin infection caused by dermatophytes, a group of fungi that feed on keratin, the protein that makes up skin, hair, and nails. The medical name for ringworm on the body is tinea corporis. The same family of fungi causes athlete's foot (tinea pedis) and jock itch (tinea cruris). They are related infections caused by related organisms, which is why someone with athlete's foot can spread ringworm to their own body or to others.

The "ring" in ringworm refers to the shape the rash sometimes takes: a circular or oval patch with a clearer center and a raised, scaly border. But the ring is not always present, and the absence of a ring does not mean the infection is absent. This is one of the most common reasons people miss it.

What Ringworm Looks Like

The classic presentation is an itchy, ring-shaped rash with a scaly, slightly raised border and a clearer or less inflamed center. The outer edge may be red or discolored. It often starts as a small, flat patch and expands outward over days or weeks. Multiple patches can develop, sometimes overlapping.

But the classic presentation is not always what you get. Several variations are worth knowing:

• No visible ring. The infection can appear as a flat, scaly, discolored patch without a distinct ring shape, especially in early stages or in body areas where the skin is thicker.
• Appearance on darker skin tones. Ringworm is often less visibly red on darker skin and may appear as a darker patch, hyperpigmentation, or subtle scaling without the redness that is typically described. This leads to delayed recognition and treatment.
• Multiple small patches. In athletes with widespread exposure, multiple small patches can appear across the torso, arms, neck, or face simultaneously rather than as one expanding ring.
• Tinea faciei. Ringworm on the face can look like eczema or a simple rash rather than the classic ring. It is common in wrestlers and BJJ athletes due to face-to-mat and face-to-face contact.
• Inflamed or kerion form. In some cases, particularly on the scalp or beard area, the infection becomes deeply inflamed and develops into a raised, boggy mass called a kerion. This form requires prescription treatment.

If you have an itchy, scaly rash that is not responding to standard moisturizer or hydrocortisone, or if it is growing, ringworm is worth considering regardless of whether you can see a distinct ring.

How Ringworm Spreads

Ringworm spreads through direct contact with an infected person, animal, surface, or object. In athletic environments, the transmission routes are specific and worth understanding.

Skin-to-skin contact

Direct contact with an active ringworm lesion is a major transmission route. In wrestling and BJJ, transmission can occur during ordinary skin-to-skin contact in practice or competition.

Contaminated surfaces

The fungi that cause ringworm can survive on contaminated surfaces and shared items long enough to spread in training environments. This is why mat cleaning and disinfection protocol matters so much in athletic facilities, and why the cleaning step alone is not sufficient. A cleaner removes organic material. A disinfectant kills the organisms.

Shared personal items

Towels, headgear, rashguards, singlets, and clothing can all carry the fungus from one person to another. Sharing any item that contacts skin is a transmission risk when ringworm is present in a training environment.

Animals

Cats are a surprisingly common source of ringworm transmission to humans, particularly in household settings. Dogs, cattle, and other animals can also carry dermatophytes. A new ringworm infection that does not have an obvious athletic transmission source is worth thinking through. Contact with a pet is a legitimate possibility.

Autoinoculation

Athletes can spread ringworm to other areas of their own body by touching an active lesion and then touching another body part. This is one reason scratching an active infection is worth avoiding.

Symptoms

Common symptoms of ringworm on the body include:

• Itching, sometimes intense
• A scaly, slightly raised patch on the skin
• A ring-shaped rash with a clearer center, in classic presentations
• Redness, discoloration, or darkening of the affected area depending on skin tone
• A growing or spreading patch
• Multiple patches in different areas of the body

Ringworm is generally not painful. If a rash is painful, warm to the touch, or showing signs of bacterial involvement like pus or significant swelling, it may have developed a secondary bacterial infection and warrants medical evaluation.

Treatment

Many cases of ringworm on the body respond to OTC antifungal treatment when treated consistently for the full labeled period.

OTC antifungal options

Commonly used OTC antifungal drug ingredients for ringworm include tolnaftate, clotrimazole, terbinafine, and miconazole. These are all used against dermatophytes when used as directed. Terbinafine is generally considered among the more potent options against dermatophytes and may work faster than others. Clotrimazole and miconazole cover a slightly broader spectrum including some yeast-related conditions. Tolnaftate is one of the few OTC antifungal drug ingredients commonly formulated into bar soap form.

The two-step protocol

For athletes dealing with an active ringworm infection, some use a medicated antifungal soap alongside a topical antifungal cream as part of a two-step routine. Defense Antifungal Medicated Bar Soap contains tolnaftate 1% and is an FDA-registered OTC drug product labeled for the treatment of most ringworm when used as directed. Used during your daily shower, it brings the active antifungal ingredient into contact with the affected area as part of your cleansing routine. Defense Antifungal Cream contains clotrimazole 1% and is applied directly to the affected area after showering for targeted topical treatment.

Treatment duration matters

For ringworm on the body, OTC antifungal treatment is often used for 2 to 4 weeks, depending on the product and label directions. This is one of the most important things to know: the infection often looks better well before treatment is complete. Stopping early because the rash has faded is the most common reason ringworm returns. Complete the full labeled treatment period.

Treating the environment

Treating the infection on your skin is only part of the solution. Anything in close contact with the affected area needs attention during treatment:

• Wash towels, clothing, and bedding frequently during treatment and dry on high heat
• Do not share towels, clothing, or personal items
• Clean and disinfect training gear and equipment
• Wipe down training areas with an EPA-registered disinfectant. BruTab 6S Disinfectant Tablets are registered as effective against ringworm-causing fungi. Always use according to label directions.

Can You Train with Ringworm

This is the question athletes and coaches ask most, and the honest answer requires nuance rather than a simple yes or no.

The general guidance from sports medicine and athletic governing bodies is that athletes with active, uncovered ringworm lesions should not participate in contact sports. The infection is contagious as long as it is active, and close skin contact in wrestling or BJJ creates high transmission risk to training partners.

Covering the lesion with a bandage or clothing reduces but does not eliminate transmission risk, and some governing bodies do not consider covering sufficient for competition clearance.

For wrestling specifically, the National Federation of State High School Associations (NFHS) and NCAA have specific skin condition policies that medical staff use to determine competition eligibility. Under NFHS rules, a wrestler with an active skin infection may be disqualified from competition unless a physician certifies the condition is not contagious and has been under appropriate treatment. The specific timeline and documentation required varies by governing body and event.

The practical guidance for athletes: start treatment immediately, cover the lesion, and consult your athletic trainer or physician before returning to contact training. Do not train through an active uncovered infection and expose your training partners.

How to Help Prevent Ringworm

Prevention in athletic environments requires both individual hygiene and facility-level protocols.

• Shower after training. Showering after training helps remove sweat and possible contaminants from the skin and is a standard prevention step in high-exposure environments. Defense Bar Soap and Defense Shower Gel are built around pharmaceutical-grade tea tree and eucalyptus essential oils known for their natural antifungal properties and support a thorough post-training cleansing routine.
• Do not share towels, headgear, or clothing. These are direct transmission vectors when ringworm is present in a training environment.
• Report suspicious skin immediately. A culture of early reporting in a wrestling room or dojo protects everyone. Coaches should inspect athletes before practice when possible and create an environment where athletes feel comfortable reporting skin concerns without fear of being benched unnecessarily.
• Clean and disinfect mats consistently. Defense Mat and Surface Cleaner removes organic material from training surfaces. Follow with an EPA-registered disinfectant such as BruTab 6S or Mueller Whizzer to kill fungal organisms. Always use according to label directions.
• For mat entry points. The barefoot athletes the Defense Foot Cleaning Station stops contaminants at the point of entry. Athletes wipe their feet before stepping on the mat, reducing the amount of fungal material that makes it onto the training surface in the first place. For athletes who train in shoes the Defense Sole Cleaner Mat serves the same function.
• Wash training gear after every session. Gi, rashguards, shorts, and training clothes should be washed after every session. Do not leave damp gear in a bag. Fungi thrive in warm, moist environments.

For a complete guide to skin infection prevention specific to combat sports, see How to Prevent Skin Infections in Combat Sports. For an overview of fungal skin infections learn more here.

When to See a Doctor

See a medical professional if:

• The infection involves the scalp or beard area. These typically require prescription treatment.
• The infection is not responding to OTC antifungal treatment after four weeks
• The rash is spreading rapidly or covering a large area
• There are signs of secondary bacterial infection such as pain, warmth, pus, or significant swelling
• You are unsure whether the rash is ringworm or another condition
• The infection keeps returning after completing full treatment courses

Scalp ringworm (tinea capitis) and deep follicular infections (kerion) require prescription oral antifungal medication because topical products cannot penetrate deeply enough to reach the infection. These are not OTC-treatable conditions.

Frequently Asked Questions

How long is ringworm contagious?

Ringworm is contagious while the infection is active. Appropriate antifungal treatment reduces transmission risk, but return-to-play decisions in competitive wrestling involve specific treatment windows and documentation. NCAA wrestling guidance, for example, specifies 72 hours of antifungal treatment for tinea lesions on the skin before an athlete can be cleared for competition. NFHS uses a skin lesion evaluation form for similar determinations at the high school level. Because policies vary by governing body, league, and medical staff, athletes should consult their athletic trainer or physician rather than self-clearing for contact training or competition.

Can you get ringworm more than once?

Yes. Recovering from ringworm does not confer lasting immunity. Athletes in high-exposure environments can contract ringworm repeatedly. This is why prevention habits and facility hygiene matter more than any single treatment episode.

Can ringworm spread through clothing or bedding?

Yes. The fungi that cause ringworm can survive on fabric and spread to anyone who comes into contact with contaminated items. Washing clothing, towels, and bedding frequently during treatment and drying on high heat reduces this risk.

What kills ringworm on surfaces?

EPA-registered disinfectants effective against dermatophytes are the right tool for surfaces. Regular cleaning products remove organic material but do not necessarily kill fungal organisms. BruTab 6S Disinfectant Tablets and Mueller Whizzer are both EPA-registered options used in athletic facilities. Always use according to label directions.

Is ringworm related to athlete's foot or jock itch?

Yes. They are caused by the same group of fungi. Athlete's foot is tinea pedis, jock itch is tinea cruris, and ringworm on the body is tinea corporis. Someone with an active athlete's foot infection can spread ringworm to other parts of their own body or to training partners through contact. Treating one while ignoring the others is a common reason infections persist or return.

Can ringworm spread from a pet?

Yes. Cats in particular are a common source of ringworm transmission to humans. Dogs and other animals can also carry dermatophytes. If you develop ringworm without a clear athletic exposure, contact with a pet is worth considering. A veterinarian can evaluate whether a pet is carrying ringworm.

Does ringworm always look like a ring?

No. The classic ring-shaped presentation is common but not universal. Early infections, infections on certain body areas, and presentations on darker skin tones may not show a distinct ring. If you have an itchy, scaly, or discolored patch that is growing, it is worth treating as a possible fungal infection regardless of whether a ring is visible.

This article is for educational purposes only and is not medical advice. For diagnosis or treatment guidance, consult a qualified healthcare professional. See our full disclaimer.