Nosebleeds are very common.
A nosebleed may be caused by trauma such as fingering the nose, forceful nose blowing, direct impact to the nose, and similar situations. A nosebleed may also be caused by irritation or dryness of the lining of the nose, which may occur with low humidity and dry environment, allergic rhinitis , colds , or sinusitis . Deviated septum, foreign objects in the nose, or other nasal obstruction may cause also cause nosebleeds. Most nosebleeds occur on the tip of the nasal septum, which contains many fragile, easily damaged blood vessels. More rarely, nosebleeds may occur higher on the septum or deeper in the nose.