(HealthDay News) - Canker sores are painful ulcers that develop in the mouth -- most often on the lip, or inside the cheek, tongue, gums or the soft palate. Most canker sores will clear up on their own, but they can be rather painful in the meantime.
Here are suggestions to help reduce the pain of canker sores and help them heal, courtesy of the U.S. National Library of Medicine: