A physician should be consulted if nosebleeds occur without obvious cause, especially if the nosebleeds are frequent. Nosebleeds resulting from a possible broken nose or a skull fracture require immediate medical attention.
Ruptured blood vessels are the cause of most nosebleeds. Bleeding may occur due to injury, sneezing, blowing or picking. A nosebleed may also be caused by an infection, allergy, tumor, arteriosclerosis, skull fracture or various blood disorders. In addition, Nose Bleeds may occur as a result of taking anticoagulant drugs. If this happens, the drug should be stopped and the dose adjusted by a physician.