Common Causes of Nosebleeds in Children
Nosebleeds in children are most commonly caused by local trauma (particularly digital manipulation/nose picking), nasal inflammation from infections or allergies, and environmental factors like dry air—with three out of four children experiencing at least one episode of epistaxis. 1
Primary Local Causes
The vast majority of pediatric epistaxis originates from the anterior nasal septum (Kiesselbach's area) and is related to local factors 1:
- Digital trauma (nose picking) is the leading identifiable cause, accounting for approximately 20% of cases when documented 2, 3
- Nasal infections and inflammation (including upper respiratory infections, allergic rhinitis, and sinusitis) account for approximately 18% of cases 2
- Crusting from nasal inflammation makes the mucosa fragile and prone to bleeding 1
- Environmental factors, particularly cold/dry air and seasonal variations, with epistaxis more common in winter months 4
Important Secondary Causes to Consider
Nasal Foreign Bodies
- Present with unilateral epistaxis, rhinorrhea, and foul smell 1
- Epistaxis occurs as the presenting symptom in 7% of nasal foreign body cases, with bleeding associated with the foreign body or its removal in 30% of cases 1
- Disk batteries require urgent recognition due to risk of tissue necrosis 1
Medications
- Intranasal corticosteroid use is actually protective, with decreased epistaxis risk (OR = 0.19) 4
- Other intranasal medications and drugs of abuse can precipitate nosebleeds 1
- Antiplatelet or anticoagulation medications increase severity risk 5
Systemic Conditions (Less Common but Critical)
- Bleeding disorders (von Willebrand disease, hemophilia) should be considered, particularly with recurrent or severe bleeding 1
- Hypertension is associated with epistaxis (OR 1.532) but causality is not established 1
- Chronic kidney or liver disease 1
Red Flags Requiring Further Investigation
Perform nasal endoscopy or refer for endoscopy in these scenarios 1:
- Adolescent males with persistent/recurrent unilateral epistaxis plus nasal obstruction: Consider juvenile nasopharyngeal angiofibroma, which presents with profuse unilateral epistaxis in 60-76% of cases 1
- Recurrent epistaxis despite prior treatment with packing or cautery 1
- Difficult to control bleeding or concern for unrecognized pathology 1
Clinical Pearls
- Bilateral bleeding, active bleeding at presentation, chronic disease history, or nontraumatic epistaxis warrant laboratory evaluation 6
- Most pediatric epistaxis (96%) stops spontaneously without additional treatment 6
- The mean age of children presenting to emergency departments with epistaxis is 7.5 years, with 57.4% being male 1
- Only 6.9% of children presenting to emergency departments require procedural intervention 1
- Anterior rhinoscopy should be performed after blood clot removal to identify the bleeding source; use an otoscope to visualize the anterior nasal cavity in young children 1