Cold sores are caused by the herpes simplex virus (HSV). There are two types of herpes simplex virus: HSV-1 and HSV-2. Both virus types can cause lip and mouth sores and genital herpes. The herpes simplex virus usually enters the body through a break in the skin around or inside the mouth.
View a picture of How Cold Sores, Canker Sores Differ and learn more about Coping, Treatment and Prevention.
Cold sores more rarely appear on the gums and the roof of the mouth. Cold sores are caused by herpes simplex type 1 virus, which lies dormant in the body and is reawakened by factors such as stress, sunburn, or fever from a wide range of infectious diseases, including colds.
Besides being itchy and painful, cold sores make you feel self-conscious. This slideshow illustrates how to prevent and treat cold sores caused by the herpes .
See a picture of and learn about cold sores (fever blisters), in the. Cold sores are fluid-filled blisters or ulcers that form on the lips and around the mouth.
Oral herpes (cold sores) is an infection caused by the herpes simplex virus (HSV)
Cold sores, commonly known as fever blisters, are small lesions filled with fluid that occur around and/or on the lips. Often these blisters are clumped or grouped