There are many reasons why sleeping lips are swollen, common causes are mosquito bites, extrusion, allergies, infections and so on.
1. Mosquito bites: during sleep, the lips are exposed to external mosquito bites, toxin stimulation can cause insect bite dermatitis caused by sleeping lips swollen.
2. Extrusion: improper sleeping position, local extrusion may also cause sleeping lips swollen.
3. Allergy: contact with allergenic substances, such as food, drugs, or chemical fiber clothing may cause local contact dermatitis, eczema, eczema, urticaria, etc., can also lead to sleeping lips swollen.
4. Infection: Lips are infected by bacteria, viruses, fungi and other pathogenic bacteria, can also lead to local inflammatory reaction, which leads to sleeping lips swollen.
There may be other reasons why your lips are swollen while you sleep, so you need to go to the hospital in time to get checked out and get a clear picture of the cause of the problem.