Jock itch (Tinea cruris) is a common type of fungal infection, caused by fungi called dermatophytes, primarily affecting the warm and moist areas of the body. This condition is more frequently observed in individuals who sweat excessively, those with eczema, and obese people. Key symptoms include intense itching, redness, and a rash. The infection is contagious, and it is important not to share personal items (clothing, towels, etc.) until the treatment process is complete. Jock itch can be transmitted through direct skin contact and can also spread between sexual partners.