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Last reviewed: 19 Sep 2025
Last updated: 17 Oct 2025

Summary

Definition

History and exam

Key diagnostic factors

  • blood at both sides of nose

Other diagnostic factors

  • bleeding starting at the nares
  • recurrent epistaxis
  • septal deviation
  • tachycardia
  • bleeding starting in the throat
  • hypotension
  • syncope
  • dizziness or lightheadedness
  • pallor
  • hypoesthesia and pain in the distribution of the second branch of the trigeminal nerve

Risk factors

  • dry weather and low humidity
  • prior nasal or sinus surgery
  • nasal cannula oxygen or continuous positive airways pressure (CPAP)
  • nasal and other facial fracture
  • other nasal trauma
  • use of intranasal drug formulations or illicit drugs
  • primary coagulopathy (e.g., hemophilia)
  • use of certain systemic drugs
  • familial hereditary hemorrhagic telangiectasia
  • juvenile nasal angiofibroma
  • chronic kidney or liver disease
  • septal deviation
  • nasal foreign body
  • environmental irritants
  • barotrauma
  • ulceration secondary to infection (e.g., herpes zoster, or bacterial infection)
  • forceful coughing
  • sinonasal neoplasm
  • chronic granulomatous disease

Diagnostic tests

Tests to consider

  • CBC
  • coagulation studies (prothrombin time, activated partial thromboplastin time, platelet function tests)
  • BUN, serum creatinine
  • LFTs
  • nasal endoscopy and nasopharyngoscopy
  • autoimmune screen/autoantibodies
  • CT scan of paranasal sinuses
  • MRI of head
  • internal and external carotid angiography
  • plain nasal or sinus x-ray

Treatment algorithm

Contributors

Authors

Madeleine R. Schaberg, MD, MPH, FACS

Director of Endoscopic Sinus, Rhinology, and Skullbase Surgery

The New York Eye and Ear Infirmary of Mount Sinai

Department of Otolaryngology, Head and Neck Surgery

Assistant Professor

Icahn School of Medicine at Mount Sinai

New York City

NY

Disclosures

MS declares she has no competing interests.

Acknowledgements

Dr Madeleine R. Schaberg would like to gratefully acknowledge Mr D. Pinder, the previous contributor to this topic. DP declares that he has no competing interests.

Peer reviewers

Nikita Chapurin, MD, MHS

​Assistant Professor

Rhinology, Sinus and Skull Base Surgery

Department of Otolaryngology

University of Florida

Gainesville

FL

Disclosures

NC declares that he has no competing interests.

Ethan Cumbler, MD

Assistant Professor

Department of Internal Medicine

University of Colorado Health Sciences Center

Denver

CO

Disclosures

EC declares that he has no competing interests.

Samuel J. Stratton, MD, MPH

Professor

UCLA School of Public Health and David Geffen School of Medicine

Los Angeles

Medical Director

Health Disaster Management/Emergency Medical Services

Orange County Health Care Agency

Santa Ana

CA

Disclosures

SJS declares that he has no competing interests.

Janet Wilson, BSc, MD, FRCSEd, FRCSEng

Professor of Otolaryngology - Head and Neck Surgery

Newcastle University

Honorary Consultant Otolaryngologist

Freeman Hospital

Newcastle-Upon-Tyne

UK

Disclosures

JW declares that she has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

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

Womack JP, Kropa J, Jimenez Stabile M. Epistaxis: outpatient management. Am Fam Physician. 2018 Aug 15;98(4):240-5.Full text  Abstract

Tunkel DE, Anne S, Payne SC, et al. Clinical practice guideline: nosebleed (epistaxis). Otolaryngol Head Neck Surg. 2020 Jan;162(1 suppl):S1-38.Full text  Abstract

Seikaly H. Epistaxis. N Engl J Med. 2021 Mar 11;384(10):944-51.

Reference articles

A full list of sources referenced in this topic is available here.

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