Nasal Dryness or Irritation: This is the most common cause of epistaxis in children, often due to dry air, allergies, or minor nasal trauma. The fact that the bleeding stops after 1-2 minutes suggests a superficial and likely benign cause.

Allergic Rhinitis: Allergies can lead to chronic nasal irritation and increase the risk of epistaxis. The recurrent nature of the bleeding could be related to ongoing allergic reactions.
Nasal Anatomical Abnormalities: Issues such as a deviated septum or nasal polyps, though less common in young children, could contribute to recurrent bleeding.
Infections: Upper respiratory infections can cause nasal irritation and bleeding, especially if the child picks their nose or blows it forcefully.

Bleeding Disorders: Conditions like von Willebrand disease or platelet function disorders, though rare, are critical to diagnose as they can lead to significant morbidity if not managed properly. The fact that the bleeding stops quickly might suggest against this, but any recurrent bleeding warrants consideration of these conditions.
Hypertension: Though uncommon in children, uncontrolled hypertension can cause epistaxis. It's essential to rule out secondary causes of hypertension.
Nasopharyngeal Tumors: Though rare, tumors in the nasal cavity or nasopharynx can cause recurrent epistaxis. Early detection is crucial for effective treatment.

Osler-Weber-Rendu Syndrome (Hereditary Hemorrhagic Telangiectasia): A genetic disorder characterized by the formation of abnormal blood vessels, which can lead to recurrent epistaxis.
Gastrointestinal Bleeding Disorders with Nasal Manifestation: Certain conditions that primarily affect the gastrointestinal system, like blue rubber bleb nevus syndrome, can also manifest with nasal bleeding.
Coagulopathy due to Vitamin K Deficiency or Other Nutritional Deficiencies: Though more common in newborns, nutritional deficiencies can lead to coagulopathy and bleeding manifestations, including epistaxis.