Which Is Contagious: Your Canker Sore or Cold Sore?
By Timberlake Dental curated from ClevelandClinic.com
“Canker sores appear inside your mouth; cold sores happen outside, says Todd Coy, DMD, Director of Cleveland Clinic’s Department of Dentistry.
Also, while canker sores are not contagious, cold sores involve a very contagious virus. You risk passing cold sores along when you kiss someone, drink out of the same container or share silverware with other people.”
See full article on ClevelandClinic.com
As stated in the article, “Canker sores will usually go away by themselves after a week or so, but they can make it difficult to eat or talk, so you may want to seek relief in the meantime. Cold sores tend to typically stick around for about two weeks, but there are steps you can take to shorten flare-ups.”