Symptoms of a fungal infection in the groin include itching or burning, a round rash with raised edges and redness, and flaking or cracking of surrounding skin, according to WebMD. A doctor can diagnose the condition visually and confirm a diagnosis after viewing skin samples under a microscope.
Doctors treat fungal infections in the groin, known as jock itch, with nonprescription and prescription medications that patients apply to the skin to kill the fungus, explains WebMD. Treatment includes cleansing and drying the area and using fresh towels and underwear daily. The fungus, called tinea, grows well in damp areas such as the genitals, and can spread through fungus-infected items or bodily contact with infected sites.