What causes bloody noses?

Answer 1

A nosebleed or nosebleedage, medically known as epistaxis, is the relatively common occurrence of hemorrhage (bleeding) from the nose, usually noticed when it drains out through the nostrils.

The cause of nosebleeds can generally be divided into two categories, local and systemic factors.

• Anatomic deformities
• Chemical inhalant
• Inflammatory reaction (eg. acute respiratory tract infections, chronic sinusitis, allergic rhinitis and environmental irritants)
• Foreign bodies
• Intranasal tumors (Nasopharyngeal carcinoma in adult, and nasopharyngeal angiofibroma in adolescent males)
• Nasal prong O2
• Nasal spray
• Surgery (such as septoplasty and endoscopic sinus surgery)
• Trauma
• Endometriosis

• Drugs - Aspirin, Fexofenadine/Allegra/Telfast, warfarin, ibuprofen, clopidogrel, desmopressin and others
• Alcohol (due to vasodilation)
• Allergies
• Blood dyscrasias
• Heart failure (due to an increase in venous pressure)
• Hematological malignancy
• Hypertension
• Infectious Diseases
• Malnutrition (especially anemia)
• Narcotics
• Vascular disorders
• Nose-picking (especially in children)
• Muscle tightness as caused by scoliosis (the tightened muscles cause blood vessels to become constricted, resulting in nosebleeds from the same side as the tightened muscles).1
  
  
  1. http://en.wikipedia.org/wiki/Bloody_nose
  
  
  

Answer 2

Sports Causes Nosebleeds If you do get persistant nose bleeds through one nasal passage. Then you could have an rupturing blood vessle. There is nothing to be afraid off. As this is normal. Just phone your doctor, and they should make an appointment with a nose specialist. Who then will burn (Cauterize) the blood vessle to stop any nose bleeds. This just stops nose bleeds through that particular blood vessel. It won't stop them altogether! Nose bleeds could also be through picking the nose, or if someone hits you in the nose.

Answer 3

It can be many things. Sometimes it is low humidity and dryness, blowing the nose too much or picking your nose. But usually it's the lack of sleep or the heat.

However, if the nosebleeds become frequent and very hard to stop, you should see a doctor. It can be a sign of a brain tumor or blood disorder.

Answer 4

Trauma is often the cause of a bloody nose. Other things which can cause a bloody nose are allergies, colds, infections, dry climate, medications, pregnancy, bleeding disorders, high blood pressure, cancer therapies, nasal cancer and polyps, smoking and alcohol abuse.

Answer 5

Bloody noses are common in cold temperatures. It can also be caused by substances in the air. If neither of these reasons sound sensible you may have a health issue, condition, or deficiancy causing your problems. Here is a link for you to do some research:

http://www.ehow.com/about_4566126_bloody-noses.html

Answer 6

It can be caused by a change of weather.

Or, it could have gotten hit,

Or, you could pick your nose and pick a vein(causing your nose to bleed).

Answer 7

Sometimes it is because you pick your nose and it gets irritated, then a vain becomes visible and if you touch it, it will bleed.

Answer 8

The small capillaries in the back your your nose become irritated and break, resulting in a bloody nose

Answer 9

Acute anemia or iron deficiency