If you happen to have small painful blisters near the lip area, you might need to go to a doctor as you might have cold sores. Cold sores, also known as fever blisters, are usually mistaken by many as canker sores. However, unlike canker sores that are caused by allergies, cold sores are contagious as it is caused by the herpes simplex virus. This article aims to give you some tips on how to cure a cold sore.
