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Canker sores are not contagious, according to WebMD. While their specific cause is not known, canker sores tend to develop in individuals during periods of high stress or following...

Canker Sores are contagious.

The Basics of Canker Sores - WebMD

Mar 19, 2015 ... Unlike cold sores, canker sores are not contagious. They don't pose any health risk other than the discomfort that comes along with them.

Are Canker Sores Contagious? - KidsHealth

So how can you tell if a sore is a (non-contagious) canker sore or a contagious cold sore? Cold sores usually develop outside the mouth, around the lips, chin, ...
One to two days before appearing, a burning or tingling sensation may be present in the area of the mouth where the lesion is developing. Canker sores typically develop: Canker sores do not develop on the external surfaces of the lips and are not to be confused with c... More »
By Shawn Watson, Guide

What Are Canker And Mouth Sores? - Colgate Professional

Canker sores are small white swellings or sores surrounded by an area of redness. While canker sores are not contagious, they are often confused with cold ...

Cold sores vs. canker sores — Oral sex risks? | Go Ask Alice!—-oral-sex-risks

Oct 9, 2014 ... In contrast to canker sores, cold sores are extremely contagious and are most often caused by the herpes simplex virus type 1 (HSV-1).

Are Canker Sores Contagious? Canker Sores vs. Cold Sores ...

When a person develops a canker sore, many people wonder if it is contagious. The truth is, canker sores are not contagious. Find out why.

Canker Sores: Causes & Treatments - LiveScience

May 27, 2013 ... They are usually very painful, but are benign and are not contagious. Canker sore. View full size image. Types. There are three types of canker ...

Canker Sores - Simple Steps To Better Dental Health

Oct 2, 2013 ... People who get canker sores typically have them a few times each year. Canker sores are not contagious. Scientists don't know what causes ...

Popular Q&A
Q: Are canker sores contagious?
A: From our video partners Human Papilloma Virus HPV How to know if you have HPV. Nope. Cold sores are though. Read More »
Q: Are canker sores contagious?
A: They could be. It's an ulcer, with bacteria on it. Don't worry; i got the fix right here, sunny. Keep in mind that stress brings canker sores! very easily, i mi... Read More »
Q: Are canker sores contagious?
A: Not Medical Advice: No. Unlike cold sores, canker sores don't occur on the surface of your lips and aren't contagious. Read More »
Q: Are canker sores contagious ?
A: You could've done your own research and found this: "Canker sores differ from cold sores in that they occur on the internal soft tissues of your mouth and aren'... Read More »
Q: Are Canker Sores Contagious?
A: Canker sores are small ulcers, inside the mouth. They usually are white, gray or a yellow color with a red border. In medical terms, a canker sore is called 'Re... Read More »