An inner thigh rash is a skin irritation that develops on the inner portion of your upper legs or groin area. Warmth, moisture, friction with clothing, and skin rubbing on skin (chafing ...

Herpes rash tends to appear on the ... around the hair follicles in areas with sweat glands (like the armpits or groin). The herpes simplex virus type 1 (oral) or 2 (genital) causes HSV.