Jock itch or jock rot is a fungal infection (tinea cruris) caused by wearing clothes that are too tight or that don't let air circulate.
What Causes It?
- Jock itch usually occurs in damp, dark areas such as folds of the skin — especially in people who are overweight — or if you sweat a lot from hot, humid weather or while exercising.
- Warm weather and tight clothing (which hold in heat and moisture) encourage fungal growth.
- Itching on the genitals and inside of the thighs
- Wear loose-fitting clothing.
- Avoid wearing tight-fitting clothes (skinny jeans, stretch pants, or tights).
- Change your clothes every day and wash clothing and bedding in hot water.
- Apply talcum or other powders to help keep the area dry.
Heat will make the itchiness worse. To relieve and treat your symptoms:
- Run cool water over the affected area.
- Place a cold clean washcloth on the skin.
- Take cool showers.
- Apply ice packs, or ice cubes in a plastic bag.
- Rub cornstarch on the affected area.
- If necessary, use a prescription medication.
Using a topical anti-fungal lotion may help. Make sure it contains the ingredient "miconazole." Here’s how to properly use it:
- Wash and thoroughly dry the affected area.
- Apply a thin coat of the anti-fungal product and gently rub in.
- Wash your hands afterwards.
- Check the product directions to see how often to apply.
- Continue to use and apply lotion for one to two weeks after seeing results.
If your rash reappears or your symptoms get worse, seek medical attention.
Last Reviewed: October 2018