What is genital herpes?
Genital herpes is a sexually transmitted infection (STI). It is caused by a virus called herpes simplex virus (HSV). Infection with HSV can cause painful sores and blisters around the lips, genitals, or anus. Sometimes, infection with HSV causes no sores. It is possible to have HSV and not know it. There is no cure, but the infection can be managed.