Herpes simplex virus type 1 usually causes cold sores. Herpes simplex virus type 2 is usually responsible for genital herpes. However, either form of the virus can cause sores in the facial area or on the genitals. You get cold sores from another person who has an active infection. Eating utensils, razors, towels or direct skin contact are common means of spreading this infection.
Cold sores occur most often in adolescents and young adults, but they can occur at any age.
Outbreaks decrease after age 35. Small, fluid-filled blisters on a raised, red, painful area of skin. Pain or tingling often preceding the blisters by 1 to 2 days. This tingling sensation before an outbreak is called the prodrome Usually persist for 7 to 10 days. Symptoms may not appear for as long as 20 days after you were exposed to the virus.