Genital herpes is an infection by herpes simplex virus (HSV) shaft of the penis or other parts of the genital region, on the inner thigh, buttocks, or anus. Herpes Signs and Symptoms. While some people realize that they have genital herpes, Signs and symptoms can be found on the penis and vulva, near the anus. Genital Herpes can be caused by any type of herpes either 1 or 2. It may be caused by HSV -1 by oral sex and by HSV-2 from genital exposure. Genital herpes penis.