Causes of nosebleed

•    Excessive nose picking

•    Frequent and forceful nose blowing or sneezing during cold or allergies

•    Dry air which can be a problem in cold climate due to which the mucous membrane or lining in the nose becomes dry, cracked and prone to bleeding

•    Certain medication such as nose sprays can cause nosebleeds as a side effect

•    Injury or infection to the nose