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.
3 doctors agreed: Angioedema: Angioedema is a classic cause of swollen lips, especially if it is just one part or just a certain side of the lip. Could also be due to a cold sore or canker sore or even an infection with bacteria if it is all red, puffy, swollen and warm to the touch. ...Read more.