Which of the following is the most common local cause of epistaxis in children?

Explanation

## Local vs Systemic Causes of Epistaxis in Children **Key Point:** Nasal trauma and digital manipulation (nose-picking) is the most common LOCAL cause of epistaxis in children, accounting for the majority of anterior nosebleeds in the pediatric population. ### Classification of Epistaxis Causes ```mermaid flowchart TD A[Epistaxis]:::outcome --> B{Etiology}:::decision B -->|Local Causes| C[Trauma & digital manipulation] B -->|Local Causes| D[Infection/inflammation] B -->|Local Causes| E[Structural abnormality] B -->|Systemic Causes| F[Coagulopathy] B -->|Systemic Causes| G[Vascular disorder] C --> H[Most common in children]:::action G --> I[HHT - most common vascular cause]:::action ``` ### Epidemiology of Epistaxis in Children | Cause | Frequency | Age Group | Notes | | --- | --- | --- | --- | | Trauma/nose-picking | 50–90% | 2–8 years | Most common local cause | | Infection (rhinitis, sinusitis) | 10–20% | All ages | Secondary to inflammation | | Structural (deviated septum, polyp) | 5–10% | Older children | Rare in young children | | HHT (hereditary hemorrhagic telangiectasia) | 1–5% | All ages | Most common vascular cause | | Coagulopathy | 1–3% | All ages | Systemic disorder | | JNA (juvenile nasopharyngeal angiofibroma) | <1% | Adolescent boys | Rare, benign vascular tumor | **High-Yield:** In children, the **majority of epistaxis is anterior, self-limited, and due to trauma**. Systemic causes (coagulopathy, HHT) are much less common and should be suspected only if epistaxis is recurrent, bilateral, or associated with other bleeding manifestations. ### Why Nose-Picking is Most Common in Children 1. **Behavioral:** Children frequently manipulate nasal mucosa 2. **Anatomical:** Kiesselbach's plexus is superficial and easily traumatized 3. **Mucosal fragility:** Dry air, upper respiratory infections, and allergic rhinitis increase mucosal friability 4. **Lack of protective reflexes:** Children do not have mature vascular tone regulation **Clinical Pearl:** A child with recurrent epistaxis should be asked about nose-picking habits. Simple education and application of petroleum jelly or antibiotic ointment to the nasal mucosa often resolves the problem. ### Systemic Causes — Red Flags Consider systemic evaluation if: - Epistaxis is **bilateral or recurrent** - Associated with **easy bruising, petechiae, or mucosal bleeding** - **Family history** of bleeding disorder or HHT - **Posterior epistaxis** (suggests vascular disorder) - **Severe or difficult to control** with conservative measures