There are two types of the herpes simplex virus. HSV-1, also known as oral herpes, can cause cold sores and fever blisters around the mouth and on the face. HSV-2 is generally responsible for genital herpes outbreaks. Doctors also recommend that infected individuals should not participate in oral sex, kissing, or any other type of sexual activity, during an outbreak. The two forms of herpes are caused by two forms of a herpes virus. There are eight herpes virus types known in humans. Herpes simplex virus types 1 and 2 appear identical when examined using the high magnification power of the electron microscope. Many people who are infected with either type of herpes virus are unaware of their infection because they may be asymptomatic and never have sores, or may have mild signs that they don’t notice.
There are two types of Herpes Simplex Virus, Herpes Simplex Virus 1 (HSV-1) often referred to as fever blisters and/or cold sores and Herpes Simplex Virus 2 (HSV-2) most commonly known as genital herpes (1).