The itchy groin may be caused by the following conditions: 1. It may be a rash near the groin, most commonly eczema, which usually appears as a small dotted herpes on the groin epidermis and is mainly itchy, with a clear or yellowish liquid flowing out after the rupture of the small herpes. 2. It may be ringworm, which is a local fungal infection of the skin, with symptoms of itching and flaking. It may also be a local soft tissue infection, or it may be caused by wearing triangular underwear with rubber bands that often rub the groin.