Last reviewed: March 2019
Last updated: March  2019

Summary

Definition

History and exam

Key diagnostic factors

  • symptoms <10 days (acute viral sinusitis)
  • symptoms >10 days but <4 weeks (acute bacterial sinusitis)
  • symptoms that worsen after an initial improvement (acute bacterial sinusitis)
  • purulent nasal discharge
  • nasal obstruction
  • facial pain/pressure
  • severe symptoms at onset (acute bacterial sinusitis)
  • dental pain

Other diagnostic factors

  • cough
  • myalgia
  • sore throat
  • hyposmia
  • oedematous turbinate
  • fever

Risk factors

  • viral upper respiratory tract infection
  • allergic rhinitis
  • GORD

Diagnostic investigations

Investigations to consider

  • nasal endoscopy
  • sinus culture
  • CT sinuses (non-contrast)
  • x-ray sinuses
  • MRI
  • lateral neck x-ray
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Gordon H. Sun

Chief Medical Information Officer

Medical Director of Inpatient Services

Chief of Otolaryngology

Rancho Los Amigos National Rehabilitation Center

Downey

CA

Disclosures

GHS is a contractor with Medscape from WebMD and a consultant for Partnership for Health Analytic Research, LLC.

Dr Gordon H. Sun would like to gratefully acknowledge Dr Melissa A. Pynnonen and Dr Joseph K. Han, previous contributors to this topic.

Peer reviewers VIEW ALL

Instructor of Otology and Laryngology

Harvard Medical School

Massachusetts Eye and Ear Infirmary

Department of Otolaryngology - Head and Neck Surgery

Boston

MA

Disclosures

BSB is a co-founder and equity shareholder in Luxxeal, Inc.

Assistant Professor/Consultant

Academic Medical Center

Amsterdam

The Netherlands

Disclosures

CG declares that he has no competing interests.

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