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.
The most common cause of swollen top lip is trauma, injuries and surgeries which include being hit by a blunt object, lip surgeries, dental procedures, top lip piercing, biting your lips, kissing, burning (e.g. with hot food), dental braces injuries, restylane injections, botox, playing musical instruments, etc.