Herpes is a skin infection caused by the Herpes Simplex Virus (HSV) that is characterized by small blisters or vesicles on reddened skin. There are two types of HSV - HSV-1 typically causes oral herpes ("cold sores") while HSV-2 usually causes genital herpes. Genital herpes can be transmitted through unprotected sex even without visible sores present and may cause pain, itching or sores in the genital area. While antiviral medications can reduce symptoms, there is no cure for herpes though many people experience few to no outbreaks over time.