Cold Sores: Symptoms, Causes, Treatment, and More

Cold sores are red, fluid-filled blisters that usually form near your mouth or other areas of your face. There's no cure for cold sores and they may appear anytime without warning and last two weeks or more. Learn about cold sore causes, risk factors, symptoms, treatment, how to tell if it's a canker sore, and more.
Cold sores are red, fluid-filled blisters that usually form near your mouth or other areas of your face. There's no cure for cold sores and they may appear anytime without warning and last two weeks or more. Learn about cold sore causes, risk factors, symptoms, treatment, how to tell if it's a canker sore, and more.

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