What Is Jock Itch?

Jock itch (tinea cruris) is a contagious fungal infection that affects the skin in the groin area, upper thighs and buttocks. It's caused by a certain kind of fungus that loves warm, moist conditions.

Here's what you need to know about jock itch:

  • Jock itch affects areas of the groin, upper thighs and buttocks.
  • Jock itch occurs more often in men than women.
  • Jock itch typically appears as raised, scaly patches on the skin that itch. Skin may also blister or ooze, although symptoms can vary.
  • Jock itch can be cured in 1 week* with LamisilAT products.

How Do You Get Jock Itch?

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You can get jock itch by touching someone's infected skin or contaminated surfaces such as towels or bedsheets. The jock itch fungus is spread by spores that can survive by eating the dead skin cells on objects for a long time.

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The fungus that causes jock itch prefers warm, moist places such as the groin, upper thighs and buttocks. Moisture is trapped between the folds of the skin, creating the perfect environment for jock itch to grow and spread.

Fungus on Feet

Jock itch is contagious and the fungus spreads easily by contact. If you scratch your athlete’s foot and then touch your groin, the fungus may be transferred and cause jock itch.

What Causes Jock Itch?

Jock itch (tinea cruris) is caused by dermatophytes — the same mold-like fungus that causes athlete’s foot. The fungus often lives harmlessly on human skin, feeding on the keratin of dead skin cells. Its growth is limited on dry, clean skin but in moist and warm conditions the fungus can multiply rapidly. Penetrating the skin through small splits, cracks or wounds, the fungus can infect the top layer of your skin, causing a scaly red rash that may itch and burn. In the groin area, this is known as jock itch.

Jock itch is a common problem for people who sweat heavily — such as those who exercise a lot — but anyone can get it. Even though women can get jock itch, it’s more common among men as moisture is more easily trapped between the scrotum and thigh.

People with diabetes and weakened immune systems are more susceptible to jock itch. Obese people may also be more at risk as their skin folds can trap moisture and allow the fungus to thrive.

The fungus that causes jock itch is contagious and is easily spread between people — though not everyone will go on to develop jock itch. Skin-to-skin contact can spread the fungus from person-to-person or from the groin area to other body parts.

Other risk factors for developing jock itch include:

  • Hot, humid conditions create the perfect environment for the fungus to grow.
  • Friction between the legs caused by the genitals or tight-fitting clothing can help the fungus to multiply.
  • Excessive sweating that results in prolonged dampness in the groin area.
  • Wearing tight clothing and underwear traps sweat, keeping the skin damp.
  • Sharing towels, bed linen or clothing that are infected with jock itch fungus.
  • Having athlete’s foot or other fungal infection on the body increases the likelihood of the fungus being transferred to the groin area.

Find Out If You Have Jock Itch

Jock Itch Symptoms

Learn How to Treat Jock Itch

Jock Itch Treatment

Learn How to Prevent Jock Itch

Jock Itch Prevention

Get Proven Relief With LamisilAT

LamisilAT Products

Test Your Knowledge About Jock Itch

Click to find out if the statement below is true or false.

#1: Only athletes get jock itch.



FALSE: Jock itch is spread by contact, so anyone can get it. Athletes are more likely to get it because of their lifestyles. However, anyone who is male, sweats often, or lives in a warm climate is at higher risk.

Next Question

#2: Only men can get jock itch.



FALSE: Men are more susceptible to this particular fungal infection.
However, jock itch is spread by contact, so anyone can get it.

Next Question

#3: Jock itch can be spread through sexual contact.



TRUE: Jock itch is spread by skin-to-skin contact with an infected person. The fungi can also be transmitted on sheets, towels, and underwear.

Next Question

#4: Jock itch is the same as chafing.



FALSE: Jock itch is a fungal infection and needs to be treated with an over-the-counter antifungal product like LamisilAT. While uncomfortable and unpleasant, chafing is caused by skin rubbing against other skin or clothing. If you’re not sure if your symptoms are jock itch, please see your doctor.

Find out more about how to treat jock itch.

Jock Itch Treatment