Herpes simplex is a disease caused by a virus. There are two forms of the virus, herpes simplex virus type 1 and herpes simplex virus type 2. It is quite communicable and can be transmitted through the exchange of body fluids. Since it can affect the genitals, it is classified as a sexually transmitted disease (STD). There is no true cure that can destroy the virus. It remains with a person for life. Antiviral medication can be used to try to control periodic outbreaks and methods to prevent body fluid transmission are used to curb the spread of the disease to others.