Hello everyone! I am 22 years old and I am a college student. For the last 3 days I am having a red colored sore on my lip which is hurting me. The area surrounding the sore has gone red and it is giving me troubles while eating. I chew tobacco sometimes due to peer pressure I have to admit here. Can this be due to tobacco chewing? One of my friends told me that it’s an ulcer. What is an ulcer i want to know?
