What Could a Bump on the Inside of My Lip Mean?

Often, a bump on the inside of your lip is not a sign of something very serious. One common reason is a mucocele. This happens when a tiny bite or minor injury causes mucus from the salivary gland to leak out, which then pools and gets walled off, forming a small bump/cyst. Sometimes, the bump can be caused by a viral or fungal infection. In such cases, the bump is usually temporary and goes away on its own. In very rare cases, a bump like this might be a benign (non-cancerous) tumor, such as an ectomesenchymal chondromyxoid tumor. These growths do not usually cause pain, but they are unusual and should be looked at if they change in size or color. It is important to keep track of the bump over time. If you see any changes or if it starts hurting, you should let a doctor check it out. Most of these bumps are harmless and simply a part of how our mouth heals or reacts to small irritations.