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A member asked:
What causes mouth blisters and sores? some germs from kissing?
A doctor has provided 1 answer
Depends on cause: Aphthous stomatitis involving the common canker sore can occur in up to 15% of americans, and may involve some bacteria like staph epidermidis. However, similar-appearing aphthous ulcers can be seen with herpes, crohn's disease, and other systemic disorders, if you have multiple aphthous ulcers or frequently recurring ones please have the lesions checked out.
Answered 12/9/2013
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What to do if I have a blister in my mouth and kiss somebody can they get it.?
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