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Generalized anxiety disorder

Last reviewed: 9 Apr 2025
Last updated: 29 May 2024

Summary

Definition

History and exam

Key diagnostic factors

  • excessive worry for at least 6 months
  • anxiety not confined to another mental health disorder
  • anxiety not due to medication or substance
  • muscle tension
  • sleep disturbance
  • fatigue
  • restlessness
  • irritability
  • poor concentration
Full details

Other diagnostic factors

  • headache
  • sweating
  • dizziness
  • gastrointestinal symptoms
  • muscle aches
  • increased heart rate
  • shortness of breath
  • trembling
  • exaggerated startle response
  • chest pain
Full details

Risk factors

  • family history of anxiety
  • physical or emotional stress
  • history of physical, sexual, or emotional trauma
  • other anxiety disorder
  • chronic physical health condition
  • female sex
Full details

Diagnostic tests

1st tests to order

  • clinical diagnosis
Full details

Tests to consider

  • thyroid function tests
  • urine drug screen
  • 24-hour urine for catecholamines, metanephrines, normetanephrines, and creatinine
  • pulmonary function tests
  • ECG
Full details

Treatment algorithm

ONGOING

anxiety symptoms meeting DSM-5-TR criteria

anxiety symptoms not meeting DSM-5-TR criteria

Contributors

Authors

Philip John Cowen, MD, FRCPsych, FMedSci

Professor of Psychopharmacology

Department of Psychiatry

University of Oxford

Oxford

UK

Disclosures

PJC declares that he has no competing interests.

Acknowledgements

Professor Philip John Cowen would like to gratefully acknowledge Dr Christopher Gale, Dr Richard P. Swinson, Dr Elizabeth Hoge, and Dr Phebe Tucker, previous contributors to this topic.

Disclosures

CG is an author of the Royal Australian and New Zealand College of Psychiatrists clinical practice guideline on social phobia, panic disorder, and generalized anxiety disorder. Otago University has commercial and research relationships with multiple pharmaceutical companies. He is an author of a number of references cited in this topic. RPS has personally received royalties for articles published in UpToDate (Wolters Kluwer) and the Compendium of Therapeutic Choices, 2nd edition (Canadian Pharmacists Association). EH is an author of a number of references cited in this topic. PT has conducted research for GlaxoSmithKline, Bristol-Myers Squibb, Wyeth Pharmaceuticals, Astra-Zeneca, Cephalon, Inc., and Ortho-McNeil. She has also consulted for Forest Pharmaceuticals and received honoraria from Pfizer, Inc. and Forest Pharmaceuticals.

Peer reviewers

Lori Davis, MD

Research Director

University of Alabama

School of Medicine Tuscaloosa Campus

College of Community Health Sciences

Tuscaloosa

AL

Disclosures

LD declares that she has no competing interests.

Arianna Di Florio, MD, PhD

Senior Clinical Lecturer

Division of Psychological Medicine and Clinical Neurosciences

Cardiff University

United Kingdom

Disclosures

ADF declares that she has no competing interests.

Elaine Lockhart, MB, BCH, BAO

Consultant in Paediatric Liaison Psychiatry

Royal Hospital for Children

Glasgow

United Kingdom

Disclosures

EL declares that she 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

American Psychiatric Association. Diagnostic and statistical manual of mental disorders, 5th ed., text revision (DSM-5-TR). Washington, DC: American Psychiatric Publishing; 2022.

Bandelow B, Sher L, Bunevicius R, et al; WFSBP Task Force on Mental Disorders in Primary Care; WFSBP Task Force on Anxiety Disorders, OCD and PTSD. Guidelines for the pharmacological treatment of anxiety disorders, obsessive-compulsive disorder and posttraumatic stress disorder in primary care. Int J Psychiatry Clin Pract. 2012 Jun;16(2):77-84. Abstract

Bandelow B, Sagebiel A, Belz M, et al. Enduring effects of psychological treatments for anxiety disorders: meta-analysis of follow-up studies. Br J Psychiatry. 2018 Jun;212(6):333-8.Full text  Abstract

Slee A, Nazareth I, Bondaronek P, et al. Pharmacological treatments for generalised anxiety disorder: a systematic review and network meta-analysis. Lancet. 2019 Feb 23;393(10173):768-77. Abstract

Reference articles

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