Most external injuries are bruises and scratches.
If the ear is severely swollen, a blood clot is present which could permanently damage the shape of the ear if it is not treated by a physician. Most bleeding from within the ear canal is from a scratch on the lining caused by a fingernail, cotton swabs, or physician's otoscope. These scratches just bleed a few drops and then heal. TO EAR Wash your hands. Then wash the wound vigorously with water and liquid soap for 5 minutes.