Herpes on the lower body is medically referred to as genital herpes, which is caused by herpes simplex virus infection. Genital herpes is a common sexually transmitted disease (STD), and its causative agent is the herpes simplex virus, including herpes simplex virus type I and herpes simplex virus type II, with herpes simplex virus type II predominating. It can be transmitted sexually, mother-to-child or mother-to-fetus. Unsafe sex, promiscuity, and a history of infections in sexual partners can increase the risk of genital herpes infection. Genital herpes is most common in men on the glans, prepuce, and coronal sulcus, and in women on the pubic mound, clitoris, uterus, labia majora and minora, and in a few patients around the anus, groin, buttocks, and scrotum. Most of the patients infected with genital herpes can have no obvious symptoms, and some patients may have blisters, vesicles or ulcers around the genitals, which may be accompanied by itching, burning sensation and pain. Genital herpes can be clinically cured after timely and effective treatment, but is prone to recurrence. When blisters and herpes are found in the genital area, timely consultation should be made, and active treatment and prevention should be carried out to avoid infection and recurrence.