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A member asked:
Do canker sores turn into cold sores?
6 doctors weighed in across 2 answers
No: Cold sores are caused by a virus, and canker sores are auto-immune (some suspect a bacterial or viral link, but that's not proven). In either case, one type of sore does not change into the other.
Answered 6/12/2015
4.7k views
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No: Canker sores are located inside your mouth, and cold sores occur on the outside of lips.
Answered 11/25/2013
4.7k views
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