Cold sores and canker sores are relatively common, non-threatening blisters in and around the mouth. Here's how to tell the difference between cold sores and canker sores and how to treat each.
Kopelman says. Dr. Kopelman points out that canker sores are often confused with cold sores, but they are not the same thing. “Unlike cold sores, canker sores are not contagious and don’t occur on the ...