Hi Welcome to the HCM In my opinion your child is suffering from epistaxis episodes and the cause is nose picking habit. Even though the habit has improved but small trauma to healing mucosa of nose can still lead to bleeds. I would recommend the following measures to help him out: 1. Use a saline nasal spray or saline nose drops two to three times a day in each nostril. These products can be purchased over-the-counter. 2.Run a humidifier in his bedroom at night. 3. Place water-soluble nasal gels or ointments in his nostrils with a cotton swab. Bacitracin®, Vaseline®, or Ayr Gel® are examples of over-the-counter ointments that you can use. Be sure not to insert the swab more than ¼ inch in his nose. These gels and ointments can be purchased in most pharmacies. 4. Avoid blowing the nose too forcefully, but you may choose to blow nose after using nasal saline sprays or drops. 5. Sneeze through an open mouth if possible. 6. Avoid putting anything solid into his nostrils such as finger or forceps. 7. Avoid drugs such as aspirin. Hopefully it will be of help. Don t worry. Take care For further questions, you may contact me.