What causes a bloody nose while sleeping?

It is actually fairly common to have nose bleeds occur at night. Most of the time, this is because the dry air in the bedroom while you are sleeping (which is made worse in the winter, due to heating of the room). The dry air leads to drying out of the nasal lining, which leads to cracking and bleeding. read more

Anyone can get a bloody nose once in a while. But if you’ve noticed that your nose bleeds frequently, or an unusual-looking blood spot has suddenly appeared on your skin, it’s time to seek medical help. read more

Colds, allergies, and frequent nose-blowing can also irritate the lining of your nose, resulting in a nosebleed. 2. Dry Air. Dry air from indoor heating or outdoor cold can dry the lining of the nose, causing it to crack and bleed. Using a humidifier while sleeping can help relieve dryness, and nasal sprays are helpful for moistening the nostrils. 3. read more

You seem concerned about periodic nose bleeds with mild headache between left nostril and left eye with about six episodes in the last 4 months. A common cause of bloody nose and headache is a blow to the head. If you've been hit in the head, consider seeing a doctor right away. read more