Mouth ulcers, also known as canker sores, are small, painful lesions that develop inside the mouth. These annoying sores can make eating, drinking, and even speaking uncomfortable. While they are generally harmless and resolve on their own, understanding the causes of mouth ulcers can help in preventing and managing them effectively. What are Mouth Ulcers? Mouth ulcers are shallow, round or oval-shaped sores that appear on the soft tissues inside the mouth, such as the inside of the cheeks, lips, or tongue. They are usually white or yellow in the center with a red border. Mouth ulcers are not contagious, but they can be quite painful, especially when irritated by certain foods or oral hygiene products. Causes of Mouth Ulcers There are several factors that can contribute to the development of mouth ulcers: 1. Injury or Trauma One of the most common causes of mouth ulcers is physical injury or trauma to the inside of the mouth. This can result from: Accidentally biting the inside of your...