Jock itch is the name for the rash that comes in the groin in the inner thighs , includes the scrotum. Intertrigo is the medical term for the rash. This is due to occlusive clothing, sweating, abrasion and sometimes when skin rubs directly. This mainly occurs on the groin but it also can come in areas that overlap. This infects men and rarely for women. This is occurs due to the humidity, friction and heat. Bacteria occasionally causes this jock itch and this can be diagnosed easily as it will appear red color when it is illuminated in black light. Treatment type depends on the cause of the Jock Itch.