what makes your lip swell up on one side
Swelling of the lips can arise due to different conditions. Trauma to the lip and mouth area is an obvious cause of swollen lips. Allergic reactions, either to foods or other substances, can often be accompanied by swelling of the lips. Angioedema is a condition in which there is swelling of the tissue beneath the skin, and this is often concentrated around the eyes and lips. Some infections (such as herpes simplex virus infection) can result in blisters (sometimes referred to as cold sores) and localized swelling of the lips.