what causes sores in the mouth

Sores in the mouth can be caused by a variety of factors, ranging from minor injuries to serious health conditions. The most common cause of mouth sores is injury, such as accidentally biting the inside of your cheek or injury from a toothbrush. Other common causes include viral or bacterial infections, skin rashes in the mouth, hormonal changes, stress, and poor oral hygiene. Certain health conditions, including autoimmune diseases, celiac disease, and inflammatory bowel diseases, can also cause mouth sores to develop. Cold sores and canker sores are among the most common types of mouth lesions. While mouth sores can be painful and uncomfortable, they are usually harmless and go away on their own in a week or two. However, if you have a mouth sore that doesnt heal or is accompanied by other symptoms such as numbness or difficulty swallowing, you should see a healthcare provider as it could be a sign of a more serious condition such as oral cancer.