Definition
What is Jock itch?
Jock itch (tinea cruris) is a superficial infection of the groin fold, inner thighs and buttock area caused by fungi called dermatophytes, which feed on keratin in the outermost layer of the skin. The typical look is an itchy patch that spreads from the groin fold toward the inner thigh, with an edge that is redder and slightly raised and a center that is relatively lighter. It's no coincidence that it's called 'jock itch': these fungi love warm, damp areas with friction and are especially common in men, athletes and people who sit for long hours or work in the heat.
Jock itch rarely comes alone. People who have it often also have athlete's foot; the fungus can easily be carried from the foot to the groin when putting on underwear, or via a towel or your hands. That's why treating only the groin and ignoring the feet is one of the most common reasons it keeps coming back. Excess weight, diabetes and heavy sweating also increase the risk.
Not every rash in the groin is fungal. Conditions like chafing (intertrigo), yeast infection, psoriasis, seborrheic dermatitis and erythrasma can look similar. The problem is that putting an over-the-counter steroid cream on jock itch may temporarily calm the itch but can let the fungus spread deeper and change how it looks. In recent years, some countries have reported a rise in widespread, treatment-resistant fungal infections linked to uncontrolled use of steroid creams. So if you're not sure, it's best to see a doctor rather than diagnose yourself.
Check yourself
How do you spot it?
- ✓Redness that starts in the groin fold and spreads toward the inner thigh
- ✓A ring-like look with a redder, raised edge and a lighter center
- ✓Itching and burning that get worse with sweating and heat
- ✓Fine scaling at the edges, sometimes with small blisters
- ✓The scrotum is usually spared; if it's involved, a yeast infection is considered
- ✓Spreading to the buttocks and hip area
- ✓On darker skin, brown-purple discoloration instead of redness
- ✓Peeling and itching between the toes at the same time (accompanying athlete's foot)
Why it happens
Main causes
01
Sweat and moisture
Working out, hot work environments, driving for long periods or sitting at a desk lead to sweat building up in the groin. When sweat can't evaporate, the skin softens and the fungus settles in easily.
02
Spreading from athlete's foot
Many men with jock itch also have athlete's foot. The fungus is easily carried from the foot to the groin when putting on underwear, or by using the same towel on your feet first and then your groin.
03
Tight and synthetic clothing
Tight jeans, synthetic underwear and gym shorts worn for long periods create friction and moisture. Friction wears down the barrier, and moisture feeds the fungus.
04
Shared items
Sharing towels, shorts or underwear in places like gyms and dorms, plus locker room benches and wet floors, makes it easier to spread. This is one of the reasons it's typically seen in athletes.
05
Weight, diabetes and immunity
Excess weight deepens skin folds and increases moisture. Diabetes and conditions that suppress the immune system make fungal infections both more frequent and more stubborn.
06
Using the wrong cream
Applying over-the-counter steroid creams, or combination creams containing a steroid and an antifungal, to calm the itch can mask the condition and let it spread. Some countries have reported that this kind of uncontrolled use is linked to widespread, treatment-resistant fungal infections.
In daily life
Triggers that cause flare-ups
Medical approach
Treatment options
01
Topical antifungal creams
For mild, limited jock itch, a doctor or pharmacist usually recommends topical antifungal creams. A Cochrane review showed that different groups of topical antifungals are effective for jock itch and ringworm on the body. The cream should be applied to a few centimeters (about an inch) beyond the edge of the patch and continued for the recommended time even after the itching stops.
02
Sticking to the full treatment time
Redness and itching may ease within a few days, but the fungus may still be on your skin. Stopping treatment early is one of the most common reasons it comes back. Finish the full course your doctor recommends.
03
Oral antifungal medications
For widespread or stubborn cases, cases that don't respond to creams, infections that have spread to hairy areas, or people with immune problems, your doctor may recommend an oral antifungal medication. Since these drugs can interact with other medications, they should only be used after a doctor's evaluation.
04
An accurate diagnosis
If things don't look typical or don't respond to treatment, your dermatologist may examine a simple skin scraping under a microscope or order a culture. Conditions that look similar, like chafing, yeast infection, psoriasis and erythrasma, need different treatment.
05
Treating accompanying athlete's foot
Along with jock itch, your doctor will also check for athlete's foot and nail fungus. If the source on the feet isn't treated, jock itch is likely to come back.
Did you know? · Jock itch
20-25% · Superficial fungal infections are estimated to affect 20-25% of the world's population; jock itch and athlete's foot are among the most common forms.
Step by step
Care routine for Jock itch
5 steps
- 01
Gentle washing
Wash your groin with lukewarm water and a low-pH, soap-free cleanser. Don't scrub hard or use a loofah.
- 02
Groin first, feet last
When drying off, dry your groin first and your feet last, or use a separate towel for your feet. That way you won't carry fungus from your feet to your groin.
- 03
Completely dry
Pat the folds thoroughly dry with a towel; if needed, use a hair dryer on the cool setting for a few seconds.
- 04
Treatment cream
Apply the antifungal cream your doctor recommended in a thin layer, extending a few centimeters (about an inch) beyond the edge of the patch.
- 05
Socks first, then underwear
If you have athlete's foot, put on your socks first, then your underwear. This simple order reduces the risk of carrying the fungus to your groin.
Caution
What to avoid, and when to see a doctor?
Avoid these
- ✕Using over-the-counter steroid creams or steroid combination creams on your own
- ✕Stopping treatment early once the itching goes away
- ✕Sharing towels, underwear and shorts
- ✕Getting dressed while your groin is still wet or damp
- ✕Tight, synthetic underwear
- ✕Scrubbing the area hard with antiseptics and bar soap
- ✕Leaving athlete's foot untreated
- ✕Walking barefoot in locker rooms and around pools
See a dermatologist
- →If there's no improvement after two weeks of regular cream use
- →If the rash spreads to the scrotum, penis, buttocks or trunk
- →If there are pus-filled bumps, pain or fever in the area
- →If you've used a steroid cream before and the rash has changed
- →If it keeps coming back
- →If you have diabetes or a condition that affects your immune system
- →If you're not sure whether the rash is fungal or something else
Common misconceptions
Myth or fact?
✕Common belief
If I put a steroid cream on the itch in my groin, it'll go away.
✓Fact
A steroid cream can temporarily calm the itch but doesn't kill the fungus; on the contrary, it can let the fungus spread and change its appearance, making diagnosis harder. Jock itch needs antifungal treatment.
✕Common belief
Only people with poor hygiene get jock itch.
✓Fact
Jock itch is very common in men who shower every day and work out. The real factors aren't poor hygiene but moisture, friction, athlete's foot and shared items.
Popular searches
Most asked about Jock itch
Your questions
Frequently asked questions
01Is jock itch contagious?+
Yes, it can spread. The fungus can pass through shared items like towels, underwear, shorts and locker room floors, and through direct contact. Spreading from your own athlete's foot to your groin is also very common. Keeping your items separate and washing them hot during treatment lowers the risk of spreading it.
02How can you tell jock itch from chafing?+
Jock itch usually has a patch that spreads outward, with a redder, slightly raised edge and a clearing center, and the itch is noticeable. Chafing is more of a symmetrical, moist-looking redness right inside the fold. With a yeast infection, the scrotum may also be involved and small satellite spots appear around the patch. A doctor's exam is needed to tell them apart for sure.
03Why does jock itch keep coming back?+
The most common reasons are stopping treatment early once the itch is gone, not treating fungus on the feet, staying in sweaty clothes for long periods, and towels and underwear that keep the contamination going. For recurring cases, a doctor can both confirm the diagnosis and make a more thorough treatment plan.
04Can I work out if I have jock itch?+
Yes, but with a few rules: wear loose, moisture-wicking gym shorts and cotton underwear, shower right after your workout, dry the area thoroughly and apply your cream. Don't share towels or shorts, and wear flip-flops in the locker room.
05Does jock itch go away on its own?+
Mild cases may sometimes seem to fade during cool, dry periods, but the fungus usually stays on the skin and comes back in warm, humid conditions. Untreated jock itch can spread and pass to others. With proper antifungal treatment, it's usually brought under control within a few weeks.
06Does using powder help?+
An absorbent powder can help keep folds dry, but it doesn't treat the fungus on its own. Use powder to reduce moisture during the day, not instead of your cream, and on the advice of a doctor or pharmacist. Some powders, like cornstarch, can feed yeasts, so they're not preferred.
Scientific basis
Sources
- 01Epidemiological trends in skin mycoses worldwide.
Havlickova B, Czaika VA, Friedrich M · Mycoses · 2008 · doi:10.1111/j.1439-0507.2008.01606.x
Superficial fungal infections were reported to affect 20-25% of the world's population, with dermatophytes being the most common cause.
- 02Diagnosis and management of tinea infections.
Ely JW, Rosenfeld S, Seabury Stone M · Am Fam Physician · 2014
A practical review summarizing the diagnosis of jock itch, athlete's foot and body ringworm, how to tell them apart from similar conditions, and topical and systemic antifungal treatment options.
- 03Management of tinea corporis, tinea cruris, and tinea pedis: A comprehensive review.
Sahoo AK, Mahajan R · Indian Dermatol Online J · 2016 · doi:10.4103/2229-5178.178099
A comprehensive review covering the management of jock itch, body ringworm and athlete's foot, general measures and the importance of sticking to treatment.
- 04Topical antifungal treatments for tinea cruris and tinea corporis.
El-Gohary M, van Zuuren EJ, Fedorowicz Z, Burgess H, Doney L, et al. · Cochrane Database Syst Rev · 2014 · doi:10.1002/14651858.CD009992.pub2
A Cochrane review compared the effectiveness of different groups of topical antifungals used for jock itch and body ringworm and showed that many of them are effective.
- 05The Great Indian Epidemic of Superficial Dermatophytosis: An Appraisal.
Verma S, Madhu R · Indian J Dermatol · 2017 · doi:10.4103/ijd.IJD_206_17
An appraisal of the widespread, treatment-resistant epidemic of jock itch and body ringworm in India and the role of uncontrolled corticosteroid cream use in it.
- 06Trichophyton indotineae-An Emerging Pathogen Causing Recalcitrant Dermatophytoses in India and Worldwide-A Multidimensional Perspective.
Uhrlaß S, Verma SB, Gräser Y, Rezaei-Matehkolaei A, Hatami M, et al. · J Fungi (Basel) · 2022 · doi:10.3390/jof8070757
A multidimensional review showing that a new dermatophyte causing widespread, treatment-resistant jock itch and body ringworm has spread from India to the rest of the world.
- 07Topographic diversity of fungal and bacterial communities in human skin.
Findley K, Oh J, Yang J, Conlan S, Deming C, et al. · Nature · 2013 · doi:10.1038/nature12171
Mapping of 14 skin sites in ten healthy adults showed that a single group of yeasts dominates on the trunk and arms, while fungal diversity on the feet is very high.
- 08Infection risk by dermatophytes during storage and after domestic laundry and their temperature-dependent inactivation.
Hammer TR, Mucha H, Hoefer D · Mycopathologia · 2011 · doi:10.1007/s11046-010-9347-9
Dermatophytes were shown to survive on fabric after a 30 °C home wash, while a 60 °C wash eliminated the fungus.
- 09pH in nature, humans and skin.
Proksch E · J Dermatol · 2018 · doi:10.1111/1346-8138.14489
A review explaining the importance of the skin's acidic pH for barrier function, enzyme activity and the skin microbiome, and how alkaline cleansers can disrupt this balance.
