Much like adults, nose bleeds are a common occurrence in kids. Often they occur spontaneously, without warning, during normal school activities, sports, or while sleeping.
In most situations, these bleeds are small and self-limiting arising from fragile vessels in the front portion of the nose. This is the commonest scenario in kids, and close inspection by your doctor will usually reveal the bleeding source.
Once identified, topical nasal ointments can help to heal the area concerned, and are often successful in reducing the incidence of nose bleeds. If persistent, cautery is an option. This involves chemical or focused heat to scar the bleeding point. It is usually done under a short anaesthetic in kids.