Medical Review By: Camila Yepes, PA-C Cold sores, aka fever blisters, are caused by the herpes simplex virus (HSV) — not by colds or fevers. But like colds, they are very contagious. You can spread HSV at any point from the first warning tingle up until the cold sore scab has completely disappeared. It’s even
Common Viruses of the skin include Molluscum Contagiosum, Warts, and Herpes Simplex Virus Type 1 and 2. These viruses are common because they are contagious with skin to skin contact.