The Upper West Side is primarily residential, with 209,000 people / 1.9 square miles, meaning about 110,000 people per square mile / 42,500 per square kilometer. The most densely populated city in the world.
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.
While most of us don't think about this very often, you can get a sunburn on your lips just like you can anywhere else. This is the reason that so many of the lip balms that we use contain sunscreen, which you might not have even noticed. Dry and swollen lips can certainly be a sign of a sunburn, but it could alternatively be a sign of something as simple as chapped lips from being too dry and perhaps having gotten some wind burn or other irritation.