Tinea cruris occurs in the groin of adult males and is caused by a fungus called dermatophytes. The fungus grows in a ring shape, almost appearing as though a worm is residing underneath the skin. Because of this, many people refer to it as ringworm. The condition is also known as jock itch, as it tends to be contracted in public locales such as change rooms. Furthermore, the same fungus is responsible for athlete's foot and ringworm of the scalp. Symptoms of tinea cruris generally affect the upper thighs, groin, and lower buttocks, but not the actual genitalia.
Males who experience tinea cruris will find their inner thighs, lower buttocks and groin area swelling, though this symptom should not affect the genitals themselves. If it does, chances are tinea cruris is not the culprit and seeking further medical advice would be a good choice.
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