
What causes nosebleeds in children?
The child has been experiencing frequent nosebleeds in recent days. After sending him to the hospital for examination, what is the cause of pediatric nosebleeds?

Pediatric nasal bleeding is a common symptom in otolaryngology, and its common causes mainly include:
1. Environmental factors: Excessively dry air may cause dryness of the nasal mucosa, leading to bleeding. Additionally, climatic conditions such as cold, heat, low atmospheric pressure, and excessively high room temperature may also affect the condition of the nasal mucosa and increase the risk of bleeding.
2. Unhealthy habits: Children may frequently dig their noses out of curiosity or discomfort, causing damage and bleeding to the nasal mucosa. This habit is especially common in children aged 2 to 5 years.
3. Disease-related factors: Inflammation within the nasal cavity, such as rhinitis and sinusitis, can cause congestion and erosion of the nasal mucosa, leading to bleeding. In addition, allergic rhinitis may cause swelling and fragility of the nasal mucosa, increasing the likelihood of bleeding.
4. Systemic diseases, such as hematologic disorders (e.g., leukemia, thrombocytopenic purpura), acute febrile illnesses (e.g., upper respiratory tract infections), and vitamin deficiencies may also cause nasal bleeding.
5. Trauma: Children are naturally active, and falls or collisions may cause nasal injury, leading to bleeding.
If the bleeding is heavy or does not stop, prompt medical attention should be sought for further examination and treatment. In daily life, maintaining appropriate indoor humidity, teaching children not to pick their noses randomly, and regularly cleaning the nasal cavity are recommended.