After coitus, the girl’s lower body will be itchy, consider vaginitis, condom allergy and so on. 1. Vaginitis: If you don’t pay attention to personal hygiene during intercourse or if the male is circumcised, it is easy to harbor bacteria, which can lead to vaginal inflammation in women, such as trichomonas vaginitis, bacterial vaginosis, etc. These vaginal inflammations can cause an increase in secretions, and itchy symptoms can also occur. 2. condom allergy: most condoms are made of latex, some women may be allergic to latex, if an allergic reaction can cause itching, usually accompanied by localized redness or rash. After intercourse girls lower body itch should go to the hospital for a detailed examination, for the cause of the symptomatic treatment, usually pay attention to sexual hygiene, if the condom allergy, it is recommended to choose other contraceptive methods.