Jock itch

Synonyms: Tinea cruris, Ringworm of the groin

Medical Specialties: Dermatology, Family practice, Internal medicine

Clinical Definition

Jock itch is a common dermatophyte infection affecting the groin area.  It is most common in adolescent males.

In Our Own Words

Jock itch is a type of fungal infection similar to ringworm. It can be found around the groin and upper inner thigh. Dermatophyte fungi like to live on moist areas of the skin, such as where the skin folds, so it is important to keep the groin area clean and dry.


Jock itch can affect anyone. However, it is most common among young men, those with supressed immune systems, those who use communal baths or locker rooms and those involved in contact sports. It can be treated with topical antifungal medications. 

Relevant Conditions
  • Inverse psoriasis
  • Suppressed immune system
Common Types
  • Ringworm
  • Athlete’s foot
Side Effects
  • Itchy, burning rash in the groin and on the upper, inner thigh
  • Rash may be ringed by a scaly border
  • May have blisters
Share this article
  • Cleveland Clinic. “Athletes Foot, Jock Itch and Ringworm.” Updated September 2013. Accessed September 2013.
  • PubMed Health. “Jock itch.” Updated May 2013. Accessed September 2013.
  • Centers for Disease Control and Prevention. “Dermatophytes.” Updated May 2013. Accessed September 2013.
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