The Difference Between Cold Sores & Canker Sores

Cold sores and canker sores are easily confused. Both occur near the mouth, can be quite painful, and share some of the same triggers, such as trauma and stress. However, these two sores have some significant differences regarding specific location, cause, treatment, and even whether or not they can be spread to others. Understanding the differences between the two can help patients choose the best treatment option to feel and look better as soon as possible.

Cold sores are viral infections that cause a weeping, painful blister on the outside of the mouth.