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16 Causes of a Nosebleed

2. Picking Your Nose

Why It Happens: Nose picking is one of the most common causes of nosebleeds. The lining of the nose is very delicate and easily broken by a sharp finger nail or rough treatment.
Additional Info: Apart from causing nosebleeds, picking one’s nose can spread germs to and from the nose. This either spreads germs, like the ones that cause colds and flu, or introduces germs into the body from the fingers. Both should be avoided.
What To Do: Don’t pick your nose! Teach children not to pick their noses and to wash their hands if they do.