What Causes a Bloody Nose?

More than half the population will experience a nosebleed during their lifetime, and they are generally not a cause for concern. Common causes of nose bleeds include:

• Injury
• Foreign objects in the nasal cavity
• Excessive dryness (caused by lack of humidity or medications)
• Environmental irritants, including allergens

Bloody noses can also be more common for people with bleeding disorders or who take medications that thin the blood such as Aspirin.