"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Waking up in the morning with a bruise you don't remember getting is not unusual. But if this starts to ...

Everybody gets the occasional bruise on their arms or legs, and it’s normal not to remember the small injury that caused it. Bruises typically aren’t a big deal, and they usually go away within a week ...

When a child bruises easily, the injuries may seem unexpected. Some can occur beyond what would seem the normal knee or shin ...

Ramming a shin into a coffee table. Bumping a knee into that rod under your desk. Taking a tumble off a bike. These things tend to hurt like [redacted], so you probably won’t be surprised when you ...