Overview
A broken nose, also called a nasal fracture, is a break or crack in a bone in your nose â often the bone over the bridge of your nose.
Common causes of a broken nose include contact sports, physical fights, falls and motor vehicle accidents that result in facial trauma. A broken nose can cause pain, along with swelling and bruising around your nose and under your eyes. Your nose may look crooked, and you may have trouble breathing.
Treatment for a broken nose may include procedures that realign your nose. Surgery usually isn't necessary for a broken nose.
Source: http://www.mayoclinic.com