For patients suffering from uncontrollable nose bleeding, or epistaxis, partial transarterial blockage of blood vessels to the nose can be curative. Usually, there is no identifiable blood vessel abnormality responsible for the bleeding. Only occassionally is bleeding from the nose a symptom or sign of a more serious underlying blood vessel abnormality such as an aneurysm leaking into the paranasal sinuses. In any event, uncontrollable nose bleeding is serious and can potentially be life-threatening. Following a diagnostic arteriogram to assure the absence of a more serious underlying cause of hemorrhage, a tiny catheter measuring only a fraction of a millimeter is guided into branches of the external carotid artery that provide blood supply to the nose. An arteriogram through the microcatheter helps to determine whether the arteries to the face are in communication with other arteries to the brain or eye prior to treatment. Using tiny embolic particles measuring approximately 400 microns, blockage of the blood vessels to the nose can be performed without causing permanent tissue damage. Most often severe spontaneous nose bleeding is due to high blood pressure that must be controlled in an effort to prevent recurrent epistaxis.