Contact dermatitis

Last updated: Wednesday, 24, November, 2010
CausesAppropriate Tests

The diagnosis is usually apparent from history of contact and the distribution of lesions.

Skin biopsy may be required if the diagnosis is obscure.

Patch testing with suspected substances identifies the responsible contactant.

See also Urticaria and Pruritis

Metal sensitivity, especially

  • Nickel

Occupational dermatitis, including

  • Aldehydes, including glutaraldehyde
  • Plastics monomers
  • Latex allergy

Plant dermatitis, including

  • Grevillea (Robyn Gordon type)
  • Rhus tree
  • Poison ivy

Skin sensitising medications

  • Sun screens
  • Insect repellents