Paediatric Epistaxis in the Emergency Department: Essential FRCEM SBA Paediatric Revision Notes and Practice Questions

Paediatric epistaxis is one of the most frequently encountered ENT presentations in any UK Emergency Department, yet its apparent familiarity conceals a genuine capacity to mislead the unwary clinician. Most episodes are benign and anterior in origin, resolving with simple first aid. A minority, however, signal haematological disease, vascular anomalies, or safeguarding concerns that demand systematic appraisal. For candidates undertaking FRCEM SBA paediatric revision, epistaxis is a high-yield topic that recurs across FRCEM Single Best Answer exam question banks precisely because it tests the intersection of clinical acuity, investigative reasoning, and appropriate escalation. Applying a structured approach in the ED and understanding the underpinning science will both improve patient outcomes and consolidate the examination technique required to pass.

Epidemiology and Clinical Context

Epistaxis affects a substantial proportion of the paediatric population, with prevalence estimates rising from approximately 30% in children under 5 years to around 56% in the 6 to 10 year age group, as reported in ENT and paediatric emergency literature. Peak incidence falls between 2 and 10 years of age. The clinical significance in the ED context lies not in the majority of straightforward anterior bleeds but in the identification of the subset with a serious underlying cause. Epistaxis is uncommon in infants under 2 years, and any presentation in this age group should carry a raised index of suspicion for non-accidental injury or a primary haematological disorder such as haemophilia or immune thrombocytopenic purpura (ITP). The Royal College of Paediatrics and Child Health provides guidance on safeguarding thresholds that directly informs ED decision-making in this context.

From an examination perspective, the FRCEM SBA exam tests recognition of atypical presentations within apparently routine scenarios. A question may begin with a straightforward nosebleed in an 8-year-old but pivot on a detail buried in the history: a family history of bleeding, recurrent hospital attendances, or associated bruising. Candidates who default to rote management algorithms without reading the clinical vignette carefully will select plausible but incorrect answers.

Aetiology: A Structured Framework

Organising the causes of paediatric epistaxis into mechanistic categories aids both clinical reasoning and examination recall.

Local Causes

Digital trauma (nose-picking) is by far the most common precipitant across all paediatric age groups. Mucosal drying from central heating or low ambient humidity, upper respiratory tract infection, allergic rhinitis, and topical nasal steroid use are frequent contributors. Foreign bodies, which are particularly prevalent in toddlers, classically present with unilateral, foul-smelling nasal discharge alongside bleeding and should not be missed. Nasal trauma from sporting or accidental injury is common in school-age children.

Systemic Causes

Haematological disorders constitute the most clinically important systemic category. ITP, haemophilia A and B, von Willebrand disease, and leukaemia may all present with recurrent or severe epistaxis. Liver disease and uraemia impair coagulation and platelet function respectively. Hypertension is an uncommon but recognised cause in children with renal or endocrine pathology. Any child with a history of easy bruising, prolonged bleeding from minor wounds, or a family history of bleeding disorders warrants a targeted haematological assessment.

Vascular and Structural Causes

Hereditary haemorrhagic telangiectasia (Osler-Weber-Rendu syndrome) is an autosomal dominant condition causing mucocutaneous telangiectasia and arteriovenous malformations. Recurrent, spontaneous, often bilateral epistaxis in a child or adolescent with a positive family history is a classic FRCEM SBA clinical scenario. Examination may reveal telangiectasia on the lips, tongue, or fingertips. Juvenile nasopharyngeal angiofibroma is a benign but locally aggressive vascular tumour occurring almost exclusively in adolescent males, presenting with unilateral obstruction and recurrent severe epistaxis. Diagnosis requires imaging rather than blind biopsy, given the risk of catastrophic haemorrhage.

Safeguarding

Non-accidental injury must be considered in children under 2 years, those with an inconsistent or evolving history, associated facial bruising or patterned injuries, recurrent ED attendances, or a delayed presentation. Epistaxis alone is rarely pathognomonic of NAI, but the overall clinical picture must be assessed with appropriate safeguarding documentation and, where indicated, referral to paediatric social care teams in line with local and national safeguarding protocols.

Pathophysiology

The nasal septum derives its arterial supply from multiple sources: the anterior and posterior ethmoidal arteries (from the ophthalmic artery, a branch of the internal carotid), the sphenopalatine and greater palatine arteries (from the maxillary artery, a terminal branch of the external carotid), and the superior labial artery (from the facial artery). At Kiesselbach’s plexus on the anteroinferior septum, these vessels anastomose within an area of particularly thin, poorly supported mucosa that is exposed to airflow turbulence, mechanical trauma, and evaporative drying. In children, the mucosal barrier is further compromised by frequent upper respiratory tract infections, which produce mucosal oedema and crusting. Repeated trauma to already fragile vessels causes recurrent bleeding from a fixed anatomical point, explaining the characteristic anterior, often unilateral, low-volume bleeds that typify paediatric epistaxis.

Posterior bleeds arise from the posterior nasal branches of the sphenopalatine artery. They are less amenable to external compression, often present with bilateral bleeding and posterior pharyngeal blood flow, and carry a greater risk of airway compromise and haemodynamic instability. The National Institute for Health and Care Excellence and specialist ENT guidance consistently identify posterior epistaxis as a higher-risk presentation warranting early senior review.

ED Assessment and Management

Initial Assessment

Begin with a rapid ABCDE approach. Assess haemodynamic stability using age-appropriate vital sign parameters. Significant tachycardia, pallor, or reduced capillary refill time suggests substantial blood loss and demands immediate senior involvement. A primary survey pitfall in children is underestimating cumulative blood loss: children may swallow substantial volumes before haemodynamic compromise becomes apparent.

History should establish duration and estimated volume of bleeding, site of origin (anterior versus posterior flow), precipitating factors, recurrence, personal or family history of bleeding disorders, current medications (particularly anticoagulants, NSAIDs, intranasal corticosteroids), and any safeguarding concerns. Examination should include anterior rhinoscopy with a headlight, inspection of the oral cavity and posterior oropharynx for posterior flow, and assessment of the skin for petechiae, bruising, or telangiectasia.

First-Line Management

Sustained digital compression of the soft nasal alae for 10 to 15 minutes is the cornerstone of acute management and remains the recommendation endorsed by NICE Clinical Knowledge Summaries for anterior epistaxis. The child should be seated leaning slightly forward to prevent blood tracking posteriorly into the airway and stomach. Ice packs applied to the nasal bridge may provide modest vasoconstriction. Cotton wool or gauze soaked in a topical vasoconstrictor such as xylometazoline can be applied to the anterior nares to assist haemostasis in refractory bleeding.

Escalation of Treatment

If bleeding persists beyond 15 minutes of compression, the following stepwise approach applies:

• Topical anaesthetic and cautery: Chemical cauterisation with silver nitrate sticks is effective for visible anterior bleeding points. Only one side of the septum should be cauterised per session to avoid septal perforation. Silver nitrate should not be applied to both sides simultaneously.
• Anterior nasal packing: Biodegradable haemostatic products (such as Nasopore or Rapid Rhino) are preferred in children where packing is necessary. Traditional ribbon gauze impregnated with bismuth iodoform paraffin paste (BIPP) remains in use in some centres.
• Posterior packing and balloon tamponade: Reserved for suspected posterior bleeds. This is associated with significant patient discomfort and risk of hypoxia (nasopulmonary reflex), and typically mandates admission under ENT.
• ENT referral and operative intervention: Sphenopalatine artery ligation or endoscopic cautery may be required for refractory cases.

Investigations

For straightforward anterior bleeds in a well child with a clear benign precipitant, no investigation is required. Indications for investigation include haemodynamic instability, estimated significant blood loss, recurrent episodes, failure to respond to initial management, clinical suspicion of a coagulopathy, or any feature suggesting systemic disease. Relevant investigations include FBC (to assess haemoglobin and platelet count), coagulation screen (PT, APTT, fibrinogen), group and save or crossmatch in severe cases, and blood film if haematological malignancy is suspected. Von Willebrand factor antigen and activity assays are not routinely available in the ED but should be requested in the outpatient setting for recurrent unexplained epistaxis.

How the FRCEM SBA Exam Tests This Topic

Paediatric epistaxis appears across the FRCEM SBA exam in several recognisable formats. The RCEM curriculum maps this topic to paediatric emergency medicine, ENT emergencies, and haematology in the ED. Common question stem patterns include:

• A school-age child with recurrent bilateral epistaxis and a family history of nosebleeds, testing recognition of HHT and the appropriate initial investigation or referral pathway.
• An adolescent male with unilateral epistaxis, nasal obstruction, and a visible pulsatile nasal mass, testing recognition of juvenile nasopharyngeal angiofibroma and the danger of blind biopsy.
• A toddler under 2 years presenting with epistaxis and an inconsistent parental history, testing safeguarding recognition and the appropriate escalation pathway.
• A child with known ITP presenting with recurrent epistaxis, testing knowledge of platelet threshold for treatment and appropriate haematology liaison.

Candidates frequently lose marks by selecting the most common cause when the clinical scenario has already signalled a less common but diagnostically critical alternative. Read every stem for the detail that changes the answer. Candidates preparing with targeted FRCEM SBA paediatric revision will encounter these stem types repeatedly in quality question banks, which is the most effective way to consolidate pattern recognition before exam day.

Revision Pearls: High-Yield Facts

1. Kiesselbach’s plexus (Little’s area) is the anatomical convergence of the anterior ethmoidal, sphenopalatine, greater palatine, and superior labial arteries on the anteroinferior nasal septum. It is the source of approximately 90% of anterior paediatric bleeds.
2. Digital trauma (nose-picking) is the commonest cause of epistaxis in children of all ages beyond infancy.
3. Epistaxis in a child under 2 years without a clear benign explanation is a safeguarding red flag. Document carefully and refer according to local pathways.
4. Silver nitrate cautery should never be applied bilaterally in the same session due to the risk of septal perforation.
5. Juvenile nasopharyngeal angiofibroma occurs almost exclusively in adolescent males. It is a clinical diagnosis supported by imaging. Biopsy in the ED is contraindicated due to haemorrhage risk.
6. HHT (Osler-Weber-Rendu syndrome) is autosomal dominant. Ask specifically about family history in any child with recurrent spontaneous bilateral epistaxis.
7. Posterior epistaxis in a child warrants ENT review, admission consideration, and formal haematological assessment. It is not a condition to manage with anterior packing alone and discharge.
8. In haemodynamically unstable epistaxis, resuscitate with IV access and fluid while simultaneously addressing the source. Do not delay resuscitation to complete the ENT assessment.

Common Pitfalls Where Candidates Lose Marks

• Selecting nasal packing as the first-line treatment before attempting sustained digital compression and topical vasoconstriction in stable anterior bleeds.
• Failing to recognise the safeguarding implication of epistaxis in a child under 2 years.
• Applying silver nitrate bilaterally to the nasal septum in a single episode, which risks avascular necrosis and perforation.
• Missing the diagnosis of HHT by not enquiring about family history of nosebleeds or failing to examine the oral mucosa and fingertips for telangiectasia.
• Assuming that a normal FBC excludes a coagulopathy. Von Willebrand disease may be present with a normal platelet count and a normal or mildly prolonged APTT.
• Failing to identify posterior bleeding. If a child is swallowing blood or blood is visible in the posterior pharynx, anterior packing alone is insufficient and ENT review is mandatory.

How EM Learning Centre Supports Your FRCEM Single Best Answer Revision

Paediatric emergency medicine is one of the most consistently examined domains in the FRCEM SBA, and mastering topics such as epistaxis requires far more than reading a single article. Effective preparation combines structured clinical knowledge with repeated exposure to high-quality, exam-format questions that reflect the nuanced reasoning the FRCEM Single Best Answer exam demands. The FRCEM Single Best Answer revision course at EM Learning Centre provides a comprehensive, consultant-authored question bank with detailed explanations, curriculum mapping, and targeted FRCEM SBA paediatric revision content covering the full breadth of the RCEM syllabus. Whether you are consolidating foundational knowledge or working through high-difficulty discriminator questions, the platform is structured to identify your gaps and build examination confidence systematically. Visit the EM Learning Centre homepage to explore the full suite of revision resources, including lessons on acute allergy, anaphylactoid reactions, angioedema, hereditary angioedema, and urticaria in the ED, all of which share clinical overlap with the vascular and systemic causes encountered in complex epistaxis cases. Consistent, spaced practice using a quality FRCEM SBA question bank remains the single most evidence-supported strategy for examination success, and EM Learning Centre is built around that principle.

References

1. National Institute for Health and Care Excellence. Epistaxis (nosebleeds). NICE Clinical Knowledge Summaries. NICE Clinical Knowledge Summaries.
2. Royal College of Paediatrics and Child Health. Safeguarding children and young people: roles and competencies for healthcare staff. Royal College of Paediatrics and Child Health.
3. National Institute for Health and Care Excellence. NICE guidance and quality standards.
4. The BMJ. Clinical review: management of epistaxis. The BMJ.
5. Resuscitation Council UK. Paediatric Advanced Life Support guidelines. Resuscitation Council UK.
6. Royal College of Emergency Medicine. RCEM Curriculum and Syllabus. Royal College of Emergency Medicine.