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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.

Dr Malerman and 2 doctors agreed

Answered 6/12/2015

4.7k views

Thank

No: Canker sores are located inside your mouth, and cold sores occur on the outside of lips.

Dr Benda, jr agreed

Answered 11/25/2013

4.7k views

Thank

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The mouth sores associated with behet's disease: where are they typically located, in mouth or lips?And are they like canker sores or cold sores?

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