![]() The amount of bleeding from a nosebleed can vary with posterior bleeds usually bleeding significantly more. In a posterior nosebleed (higher up in the nose), large amounts of blood typically flow down the back of the throat. If one nostril becomes partially blocked with a blood clot, the blood might flow out the other nostril or down the back of the throat. Nosebleeds usually involve one nostril, but occasionally both nostrils are involved. Nosebleeds also commonly are caused by trauma, such as nose picking, forceful blowing of the nose or severe facial trauma from an automobile accident or contact sports. Examples include dong quai, feverfew, garlic, ginger, ginko biloba, ginseng and vitamin E. Homeopathic medications and dietary supplements - Some dietary supplements contain chemicals that may prolong bleeding.Medications that interfere with blood clotting - These include prescription blood-thinners (anticoagulants) and nonsteroidal anti-inflammatory drugs (NSAIDs), such as aspirin and ibuprofen ( Aleve, Motrin and others). ![]() It also makes superficial blood vessels dilate (enlarge), making them more likely to be injured and bleed. Heavy alcohol use - Alcohol interferes with the normal activity of platelets in the blood, and this increases the time needed for blood clots to form.Medical conditions - Examples include kidney failure, thrombocytopenia (low levels of the blood platelets needed for clotting), high blood pressure and hereditary bleeding disorders, such as hemophilia.Workers also may develop nosebleeds from on-the-job exposure to sulfuric acid, ammonia, gasoline or other chemical irritants. Exposure to irritating chemicals - The primary culprit is cigarette smoke, even secondhand cigarette smoke.Strenuous nose blowing to clear the nose also can cause a nose to bleed or to start bleeding again after a nosebleed has been controlled. More congestion can cause blood vessels to widen (dilate), which makes them more vulnerable to injury. Colds and allergies - Upper respiratory tract infections and allergies cause inflammation in the nose, which can increase the risk of bleeding.The altered airflow pattern causes the skin of the nasal septum, on the narrower side, to become dry and cracked, increasing the risk of bleeding. A deviated septum - If the wall between the two nostrils is shifted to one side (deviated), air flow in the nostrils is uneven.Nosebleeds are more frequent during changes of seasons before the tissues have become accustomed to the change in humidity. The hot, dry indoor air causes the delicate nasal skin to crack and bleed. A hot, dry indoor climate - This is a trigger for nosebleeds in parts of the United States where heat (especially forced hot air) is used during the winter. ![]() Common risk factors for nosebleeds include: Also, in most cases of severe nosebleeds, the person has another health problem, such as high blood pressure or a bleeding disorder, or the person takes a blood-thinning medication that slows down the blood-clotting process.Ĭertain people are more likely to get nosebleeds because of their environment, work history, health problems or use of medications that increase the tendency to bleed. Posterior bleeds usually drain down the back of the throat, but can also bleed out of both nostrils. In these cases, the hemorrhage (severe bleeding) is usually from an artery in a posterior location, higher and deeper in the nose. Only rarely is a nosebleed life threatening or fatal. It usually can be stopped with some local pressure and a little patience. In most cases, this type of nosebleed is not serious. The most frequent location is the nasal septum, the wall between the two sides of the nose. ![]() Nosebleeds near the front of the nose, called anterior nosebleeds, are very common since this is the most accessible area to injury. When this tissue is injured, even from a minor nick or scratch, these blood vessels tend to bleed, sometimes heavily. The inside of the nose is covered with moist, delicate tissue (mucosa) that has a rich supply of blood vessels near the surface.
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