Last reviewed: 16 Apr 2021
Last updated: 11 Mar 2021

Summary

Definition

History and exam

Key diagnostic factors

  • hair loss
  • nonscarring alopecia
  • exclamation point hairs
  • normal underlying skin in bare areas
  • nail pitting

Risk factors

  • autoimmune disease
  • family history of autoimmune disease

Diagnostic investigations

Treatment algorithm

Contributors

Senior Consultant

Department of Family Medicine

National University Health System

Singapore

Disclosures

FSL served on the executive committee in the council of the College of Family Physicians Singapore until 2019.

Assistant Director

Research Support Unit

Yong Loo Lin School of Medicine

National University of Singapore

Singapore

Disclosures

MS declares that she has no competing interests.

Dr Fong Seng Lim and Dr Miny Samuel would like to gratefully acknowledge Dr Richard A. Strick, Dr Jack Green, and Dr Paradi Mirmirani, previous contributors to this topic. RAS is an honorary member of the National Alopecia Areata Foundation (NAAF) clinical scientific advisory board. JG is an author of a reference cited in this topic. PM declares that he has no competing interests.

Peer reviewersVIEW ALL

Professor and Chair

Department of Dermatology

University of Minnesota

Minneapolis

MN

Disclosures

MH declares that she has no competing interests.

Associate Professor

Department of Dermatology

University Hospital of Zurich

Zurich

Switzerland

Disclosures

RMT is an author of a number of references cited in this topic. 

Use of this content is subject to our disclaimer