Webmay 3, 2024 · herpes simplex infection of the lower back and buttocks, also called sacral herpes simplex or genital herpes, is a common recurrent skin condition associated with. Websep 27, 2024 · how to treat a rash on your buttocks. Published on september 27, 2024. Medically reviewed by susan bard, md. Webjul 24, 2024 · mouth and face. An oral herpes infection causes cold sores on your lips and around your mouth. Some people develop herpetic gingivostomatitis (sores inside their.