2 doctors weighed in:

What causes bloody noses?

2 doctors weighed in
Dr. Heidi Fowler
Psychiatry
1 doctor agrees

In brief: Depends

Some common reasons can include: nasal congestion or nasal dryness, high blood pressure & excessive use of decongestants.
Being at a high altitude, trauma to the nose, picking the nose, or blowing the nose hard. Bacterial and viral infections can increase the risk as well as bleeding disorders. There can be recurrent nose bleeds if a small vessel in the nose is broken. Alcohol or Cocaine abuse.

In brief: Depends

Some common reasons can include: nasal congestion or nasal dryness, high blood pressure & excessive use of decongestants.
Being at a high altitude, trauma to the nose, picking the nose, or blowing the nose hard. Bacterial and viral infections can increase the risk as well as bleeding disorders. There can be recurrent nose bleeds if a small vessel in the nose is broken. Alcohol or Cocaine abuse.
Dr. Heidi Fowler
Dr. Heidi Fowler
Thank