Key Facts Mouth sores are common and can occur in individuals of all ages They can develop on the lips, tongue, inside of cheeks, and on the gums and roof of the mouth Mouth sores can be caused by a range of factors including infections, injuries, certain medications, and underlying health conditions They are usually not serious and often heal on their own, but some cases may require medical attention Treatment depends on the type of mouth sore and underlying cause What are Mouth Sores? Mouth sores, also known as oral ulcers or mucosal lesions, are painful or discomforting lesions that can develop in various areas within the mouth. They…