The rash develops in the moist skin folds of the groin, buttocks, inner thighs, and genitals.

Jock itch is treated with topical antifungals and, in severe cases, oral antifungals.

Because of its appearance, it is occasionally mistaken forgenital herpes.

A close up of the pelvis of a man wearing jean shorts sitting on a chair. His groin is highlighted red.

MARHARYTA MARKO / Getty Images

MARHARYTA MARKO / Getty Images

What Are the Symptoms of Jock Itch?

The fungus thrives on moist areas of skin, especially in the creases of the groin and buttocks.

Once an infection is established, the fungus will cause an itchy skin rash that spreads outward.

Are Jock Itch Blisters Contagious?

The fungus that causes jock itch can vary depending on the part of the world you live in.

The throw in most commonly seen in North America is calledTrichophyton rubrum.

This same fungus can also cause athlete’s foot, ringworm, and fungal nail infections.

Risk factors for jock itch include:

How Long Do Jock Itch Blisters Last?

If left untreated, jock itch can last for months and cause cracking, bleeding, and pain.

This is especially true with fungal nail infections (tinea unguium).

If treated appropriately, jock itch will usually clear within three to four weeks.

How Do You Treat Jock Itch Blisters?

Jock itch is commonly treated with topicalantifungal drugs.

Improved hygiene is also crucial to clearing the infection.

That means keeping the affected areas clean and dry as part of your daily routine.

Jock itch is commonly mistaken forgenital herpes.

Jock itch is common but can be avoided by taking the following preventive steps:

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