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.
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.
Staying with swollen lip, whether painless or painful lips is a stress on its own. Such a health phenomenon canât emerge out of nowhere. Therefore besides lip swelling causes, you should keenly note all changes in symptoms right from the point your lips begin to enlarge and grow thicker than its normal size.