👉 ulcers are a group of skin conditions that can occur on the inside of your mouth, especially in front of the tongue. They are characterized by small blisters or sores that appear on the inside of the lips and cheeks. The exact cause of ulcers is not fully understood, but they are often related to certain factors such as stress, infection from other conditions, poor oral hygiene, or a weakened immune system. The symptoms can include redness, pain, swelling, and bleeding. In