Cold Sore Remedies And Definition

Cold sores are small, painful, fluid-filled blisters that usually occur on the lips, gums, or roof of the mouth. They’re caused by the herpes simplex virus and are contagious. There may be pain or tingling one to two days before the cold sores appear.

Cold sores generally clear in seven to ten days. They’re sometimes confused with canker sores, which are not contagious but produce small, painful ulcers in the soft tissues of the mouth, such as the tongue and the walls of the mouth.