Last reviewed: November 2017
Last updated: August  2017

Summary

Definition

History and exam

Key diagnostic factors

  • presence of risk factors
  • presence since birth
  • asymmetrical, indistinct or irregularly bordered, variably coloured papules with diameter >5 mm
  • hx of change in shape and colour
  • asymptomatic (usually)
  • multiple lesions
  • flat, brown macule
  • dome-shaped papule
  • light brown background with speckled darker brown spots within
  • blue-grey dome-shaped papule
  • central pink-to-brown papule with a surrounding depigmented white ring
  • pinkish-brown papule

Risk factors

  • genetic predisposition
  • UV exposure
  • fair skin
  • age: older children and young adults

Diagnostic investigations

Investigations to consider

  • non-invasive imaging technologies
  • total body photography
  • biopsy
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Jason B. Lee

Professor of Dermatology & Cutaneous Biology

Clinical Vice-Chair

Director of Residency & Dermatopathology Fellowship

Director of Pigmented Lesion Clinic

Thomas Jefferson University Hospital

Philadelphia

PA

Disclosures

JBL declares that he has no competing interests.

Dr Jason B. Lee would like to gratefully acknowledge Dr Laurel R. Schwartz, a previous contributor to this monograph. LRS declares that she has no competing interests.

Peer reviewers VIEW ALL

Clinical Professor

Department of Medicine

Medical College of Ohio

Toledo

OH

Disclosures

CGB declares that he has no competing interests.

Dermatologist

Cutaneous Pathology

WCP Laboratories

Missouri

MO

Disclosures

MH declares that he has no competing interests.

Consultant Dermatologist

West Herts NHS Trust and Kings College London

London

UK

Disclosures

VB declares that she has no competing interests.

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