Last reviewed: November 2017
Last updated: November  2017

Summary

Definition

History and exam

Key diagnostic factors

  • adolescent and young adult age
  • hx of living in area of high temperature and humidity
  • susceptible skin characteristics
  • positive drug hx
  • lack of pruritus or pain
  • dyspigmentation
  • macules or patches
  • seborrheic distribution
  • fine overlying scale

Other diagnostic factors

  • yellow fluorescence under Wood lamp exam

Risk factors

  • high ambient temperature and humidity
  • adolescent and young adult age
  • hyperhidrosis
  • systemic corticosteroid or other immunosuppressant use
  • participation in athletics
  • greasy skin
  • FHx of PV
  • malnutrition
  • use of oral contraceptives
  • HIV infection and other immunosuppressive conditions
  • use of occlusive ointments or creams

Diagnostic investigations

1st investigations to order

  • microscopic exam with KOH preparation
Full details

Investigations to consider

  • skin biopsy
  • culture
  • Gram stain
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Brian L. Swick

Clinical Associate Professor

Departments of Dermatology and Pathology

University of Iowa

Iowa City

IA

Disclosures

BLS declares that he has no competing interests.

Peer reviewers VIEW ALL

Private Practice of Dermatology

Coralville

IA

Disclosures

HW declares that he has no competing interests.

Consultant Paediatrician

Heartlands Hospital

Birmingham

UK

Disclosures

HG declares that she has no competing interests.

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