THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Contact Dermatitis
  • Contact Dermatitis (Allergic)

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    Contact Dermatitis (Allergic)

    Skin manifestations of allergic contact dermatitis range from erythema through vesiculation to edema with bullae, ulceration, or both. Changes often occur in a pattern or distribution that suggests a specific exposure; in this image, linear streaking on an extremity suggests plant contact (eg, poison ivy or poison sumac).

    Image provided by Thomas Habif, MD.