"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." NOTICING THAT YOUR face looks a little puffy or outright swollen can be a shocking sight. Usually, facial ...

Swollen lips may be caused by allergic reactions, injuries, chapping or sunburn, infections, and cysts called mucoceles. The swelling comes from either inflammation or built-up fluid under the skin.

When it comes to your body, what you should never ignore about lumps or swelling is simple: any new bump, thickening or persistent puffiness deserves attention. Most changes turn out to be minor, but ...