Last reviewed: June 2019
Last updated: January  2019

Summary

Definition

History and exam

Key diagnostic factors

  • skin lesions
Full details

Other diagnostic factors

  • family history
  • skin discomfort
Full details

Risk factors

  • genetic
  • infection
  • local trauma
  • stress
  • smoking
  • light skin
  • alcohol intake (beer)
Full details

Diagnostic investigations

Treatment algorithm

ONGOING

plaque

guttate

pustular

Contributors

Authors VIEW ALL

Assistant Professor

University of Pisa

Consultant Dermatologist

University Hospital of Pisa

Pisa

Italy

Disclosures

AC has been reimbursed as a consultant and/or speaker for AbbVie, Biogen, Leo Pharma, Lilly, Janssen, and Novartis; AC is also the author of references cited in this topic.

Dr Andrea Chiricozzi would like to gratefully acknowledge Dr April W. Armstrong and Dr Tsu-Yi Chuang, previous contributors to this topic.

Peer reviewers VIEW ALL

Western Infirmary, Glasgow

Consultant Dermatologist Dermatology

Glasgow

UK

Disclosures

DB is an author of a clinical practice guideline referenced in this topic. DB has been reimbursed as a consultant, researcher, and lecturer for Abbott, Leo, Pfizer, Merck, Janssen-Cilag, and Novartis.

Physician

Department of Dermatology

Kaiser Permanente Vallejo Medical Center

Vallejo

CA

Disclosures

PM declares that she has no competing interests.

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