Epistaxis

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Last reviewed: 11 Apr 2025
Last updated: 12 Sep 2023

Summary

Definition

History and exam

Key diagnostic factors

  • blood at one nostril or on both sides of nose
  • presence of risk factors
Full details

Other diagnostic factors

  • bleeding starting at the nares
  • recurrent epistaxis
  • septal deviation
  • bleeding starting in the throat
  • signs of haemodynamic compromise
  • intranasal polyp
  • telangiectasia
Full details

Risk factors

  • dry weather and low humidity
  • septal deviation
  • minor nasal trauma
  • nasal foreign body
  • nasal polyp
  • topical nasal drugs
  • primary coagulopathy (e.g., haemophilia)
  • medication (e.g., aspirin, anticoagulant, non-steroidal anti-inflammatory drugs)
  • familial hereditary haemorrhagic telangiectasia
  • juvenile nasal angiofibroma
Full details

Diagnostic investigations

1st investigations to order

  • clinical diagnosis
Full details

Investigations to consider

  • FBC and ‘group and save
  • clotting studies (INR, prothrombin time, activated partial thromboplastin time, platelet function tests)
  • urea and electrolytes and serum creatinine
  • liver function tests (LFTs)
  • CT scan of paranasal sinuses
  • ECG
Full details

Treatment algorithm

INITIAL

active epistaxis: major haemorrhage

active epistaxis: no major haemorrhage

ACUTE

persistent epistaxis despite initial measures

ONGOING

epistaxis resolved

recurrent epistaxis

Contributors

Expert advisers

Alexander Alexiou, MB, BS, BSc, DCH, FRCEM, DipIMC RSEd

Emergency Medicine Consultant

Barts Health NHS Trust

Physician Response Unit Consultant

London’s Air Ambulance

Royal London Hospital

London

UK

Disclosures

AA declares that he has no competing interests.

Acknowledgements

BMJ Best Practice would like to gratefully acknowledge the previous expert contributor, whose work has been retained in parts of the content:

Darren Pinder, BSc(Hons), MB BChir, MSc(Med Ed), FRCS(ORL)

Consultant ENT Surgeon

Royal United Hospital Bath NHS Trust Bath

UK

Disclosures

DP declares that he has no competing interests.

Peer reviewers

Darren Pinder, BSc(Hons), MB BChir, MSc(Med Ed), FRCS(ORL)

Consultant ENT Surgeon

Royal United Hospital Bath NHS Trust

Bath

UK

Disclosures

DP declares that he has no competing interests.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

National ENT Trainee Research Network. The British Rhinological Society multidisciplinary consensus recommendations on the hospital management of epistaxis. J Laryngol Otol. 2017 Dec;131(12):1142-56. Abstract

ENT UK. Nose bleed (epistaxis): global ENT guideline. March 2023 [internet publication].Full text

ENT UK. Guideline for management of idiopathic epistaxis in adults. March 2019 [internet publication].Full text

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
  • Epistaxis images
  • Differentials

    • Haemoptysis
    • Haematemesis
    More Differentials
  • Guidelines

    • Guideline for management of idiopathic epistaxis in adults
    • British Rhinological Society multidisciplinary consensus recommendations on the hospital management of epistaxis
    More Guidelines
  • Videos

    Insertion of an anterior nasal pack

    More videos
  • Patient information

    Nosebleeds in children

    Nosebleeds (epistaxis) in adults

    More Patient information
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