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.
Causes of Swelling in the Upper Lip. Lips are very delicate and are prone to injury. Any big or small injury like a punch on the mouth, or a bad fall on the face, or biting of the lip while eating can trigger swelling on the upper lip. It can happen due to an allergic reaction.