Last reviewed: November 2017
Last updated: October  2017

Summary

Definition

History and exam

Key diagnostic factors

  • pruritus
  • blisters and vesicles
  • weeping, oozing, and crusting

Other diagnostic factors

  • previous exposure
  • breathing difficulties
  • generalized erythroderma
  • periorbital edema
  • systemic contact dermatitis
  • black-spot dermatitis

Risk factors

  • occupation that involves exposure to relevant trees and plants
  • outdoor activities
  • domestic pets and livestock
  • use of forestry equipment and machinery
  • smoke from burning Toxicodendron species
  • children
  • genetic susceptibility

Diagnostic investigations

Investigations to consider

  • botanical identification
  • black-spot test
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Honorary Associate Professor of Dermatology

Waikato Clinical Campus

University of Auckland

Hamilton

New Zealand

Disclosures

MR declares that he has no competing interests.

Peer reviewers VIEW ALL

Clinical Assistant Professor

University of Iowa College of Medicine

Iowa City

IA

Disclosures

BS declares that he has no competing interests.

Consultant Dermatologist

Kinghorn Dermatology Unit

Royal United Hospital

Bath

UK

Disclosures

CL declares that he has no competing interests.

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