Herpes simplex, often known simply as herpes, is a viral infection caused by the herpes simplex virus. [5] Herpes infections are categorized by the area of the body that is infected. The two major types of herpes are oral herpes and genital herpes, though other forms also exist. Oral herpes involves the face or mouth. It may result in small blisters in groups, often called cold sores or fever. The herpes simplex virus, or herpes, is categorized into 2 types: Symptoms of herpes include painful blisters or ulcers at the site of infection. Herpes is caused by the herpes simplex virus. There are two types, oral herpes and genital herpes, which are usually sexually transmitted. Find out more here. Herpes simplex virus (HSV) leads to blisters around the mouth or genitals. It transmits through contact, but treatment can decrease outbreak severity. The herpes simplex virus, also known as HSV, is a viral infection that causes genital and oral herpes. Get the details on key signs, diagnosis, and treatment. Genital herpes is a common sexually transmitted infection (STI) that can be treated. People who are sexually active can get genital herpes. This fact sheet answers basic questions about genital herpes. Herpes simplex virus (HSV) causes oral herpes, genital herpes and other infections. Learn how HSV spreads and how antiviral treatments can help. What's going on down there? WebMD shows you pictures of genital herpes symptoms and treatments -- and how to avoid getting the virus in the first place. Herpes is caused by the herpes simplex virus (HSV), which has 2 types: HSV-1 (often oral) and HSV-2 (often genital). Most people with herpes don’t know they have it because symptoms are often. The herpes simplex virus causes genital herpes. Genital herpes can often be spread by skin-to-skin contact during sexual activity. Some people infected with the virus may have very mild symptoms or no symptoms. They can still able to spread the virus. Other people have pain, itching and sores around the genitals, anus or mouth.