Raised bumps on the lips may be caused by insect bites, trauma, angioedema, herpes simplex, boils, tumors, and other factors. 1. Mosquito bites: mosquito bites at the lips, mosquito secretions can cause the affected area to produce an inflammatory reaction, appearing long bags, itching and other symptoms. 2. Trauma: such as teeth accidentally biting lips, bumps, etc., not timely clean up, can cause localized scarring raised bag. 3. Angioedema: related to a variety of allergic factors, manifested as limited edema in the mucous membrane area of the lips, accompanied by symptoms of pain and swelling. 4. Herpes simplex: Herpes virus infection can cause blisters in the lip area, which may then cause ulcers, burning and other symptoms. 5. Boils: Inflammatory damage that may cause a localized pouch on the lips with pain, redness and swelling. 6. Tumor: It may also be caused by benign tumors, such as papilloma and mucous gland cysts, which need to be treated surgically. If the lips long raised bag, it is recommended to go to the regular hospital in a timely manner, to clarify the cause of the disease, follow the doctor’s instructions for treatment, so as not to delay the condition.