Cold Sore
Cold Sore Learning Center

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Cold Sore
Cold Sore
Herpes labialis is an infection caused by the herpes simplex virus. It leads to the development of small and usually painful blisters on the skin of the lips, mouth, gums, or lip area. These blisters are commonly called cold sores or fever blisters.
Fever blisters and canker sores are painful oral abrasions. A fever blister is an eruption of the skin appearing on the lips, gums, and...
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Cold sores are red, fluid-filled blisters that appear most often near the mouth. They have no cure, are contagious, and may reoccur without...
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