Several types of allergies may cause swollen lips. Angioedema is a more concerning allergic reaction. It can be triggered by a few things, including: Idiopathic angioedema (swelling with an ...

"The lips will appear larger than anticipated, which can cause anxiety. Don't worry. The swelling is temporary, and the size of your lips will decrease with time," Green says. Bruising and ...

Some allergies can cause anaphylaxis - a life-threatening reaction that happens very quickly. Besides this, you may also notice a rash that appears swollen or raised, and may feel itchy.