There are many reasons for lip edema, the common ones are angioedema, insect bite dermatitis, trauma and other reasons.
1. Angioedema: occurs in the subcutaneous loose tissue, or mucous membrane of the limited edema, is due to physical factors, contact with certain foods, drugs, cosmetics, chemicals, clothing and other allergens, caused by allergic reactions will lead to lip edema.
2. Insect bite dermatitis: the latest by the outside world mosquito bites, toxin irritation caused by the inflammatory reaction of the lips, can lead to symptoms of lip edema.
3. Trauma: falls, bumps, extrusion, etc., traumatic factors, can also cause symptoms of lip edema.
There may be other causes of lip edema that need to go to the hospital in time to check and clarify the cause.