why would someone lips be swollen
Likey allergic rxn: Allergic reaction to a number of things could cause swollen lips with associated itchy (sic). Angioedema can cause swollen lips. Important to note if localized to one area or involves the upper and lower lips diffusely. ...Read more.
Angioedema is caused by an allergic reaction to something you've eaten, an insect bite, pollen allergies, or a medication you've taken. 1  It causes a swelling of the lips, face, and tongue, which usually occurs rapidly. It can also sometimes be accompanied by redness or bumps (hives). Due to the swelling, you may have difficulty talking. Angioedema can also cause swelling of the airway and difficulty breathing, which may be life-threatening.