By Tracy Swartz Published Dec. 20, 2024, 6:00 a.m. ET17 Comments Sexually transmitted infections are most commonly found on the genitals, anus and mouth. A medical group is warning that another body part can become itchy, irritated, crusty and leaky from an STI.Getty Images/iStockphoto This is just swell. Sexually transmitted infections (STIs) — which affect one in five...