NOSEBLEEDS are common. This may look and sound scary, but they in fact rarely indicate a serious medical problem. The nose contains many blood vessels, which are located close to the surface in the front and back of the nose. They are very fragile and bleed easily.
Nosebleeds occur when one of the many blood vessels which line the nose bursts.
These can be caused by numerous factors such as infections, injuries, allergic reactions, nose picking, or by pushing objects into the nostrils.
The medical term for a nosebleed is epistaxis. It may be common in children and fortunately does not always indicate an underlying problem. – SCIENCE BRIDGE ACADEMY