Fever blisters are also known as cold sores. They are caused by the herpes simpl…
Fever blisters are also known as cold sores. They are caused by the herpes simplex virus. This virus remains in your body throughout your life and causes fever blisters to erupt several times per year. If you have a fever blister, you should work on getting rid of it because fever blisters are contagious. Be careful not to touch the fever blisters, and make sure to wash your hands regularly so that you do not spread this virus. Source by chrisimaegray