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What do cold sores look like?

Cold sores are groups of painful, fluid-filled blisters (often called fever blisters). These unsightly sores usually erupt on the lips, and sometimes on skin around the lips. Clusters of small blisters may also occur on the gum tissue near the teeth and/or on the bony roof of the mouth.

Cold sores usually heal in about a week. Once the blister breaks, an unsightly scab forms. 

Continue Learning about Oral Herpes (Cold Sores)

How long do cold sores last?
Honor Society of Nursing (STTI)Honor Society of Nursing (STTI)
Oral herpes, or cold sores, goes away on its own in about one to two weeks. Taken early, antiviral m...
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What is oral herpes?
Honor Society of Nursing (STTI)Honor Society of Nursing (STTI)
Oral herpes, or cold sores, develop as a result of the herpes simplex virus. Herpes simplex virus ty...
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What are cold sores?
American Dental AssociationAmerican Dental Association
Cold sores -- caused by herpes virus Type 1 or Type 2 -- are contagious. The initial infection (...
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Is a fever blister on the mouth, herpes simplex 1?
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Yes, a fever blister on the mouth is herpes simplex 1.  It can also be triggered by sun exposure, so...
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.