We've all been there: You're going about your day when, out of nowhere, you feel a trickle start in your nose. Nosebleeds might be common, but they're always inconvenient-and sometimes a little ...

Nosebleeds usually are not serious and can be stopped by leaning forward and pinching the nostrils. Seek emergency help if your nose bleeds for more than 30 minutes or you lose a cup of blood or more.