That's why jock itch usually develops in the skin around the groin, inner thighs, and buttocks.Ī bad case of itchy balls is more common in men and adolescents. They're typically harmless, but they can multiply quickly and cause infections when they're allowed to thrive in warm, moist areas. These tiny, microscopic fungi thrive on the skin and even the hair. Medically known as Tinea cruris, jock itch is a fungal infection in most cases.The itchiness is caused by mold-like fungi.
So, how do you know if you have a bad case of jock itch you ask?įirstly, before diving deep into why it happens, you need to figure out what a jock itch is, or what itchy balls really mean.