Mouth Ulcers

Mouth ulcers are painful sores that appear on the tongue, inside of the cheeks, and on the gums. They can range in size from a few millimeters to a few centimeters in diameter. Mouth ulcers can be caused by stress, certain medications, acidic foods, or an underlying medical condition. Treatment for mouth ulcers typically involves over-the-counter medications and home remedies such as salt water rinses and avoiding acidic foods.