ABSTRACT
Dermatitis occurring after ingestion of urushiol chicken is quite common in Korea. Allergic contact dermatitis is well established as a type IV immune reaction. The severity and acuteness of the inflammation determines the clinical appearance of allergic contact dermatitis. The prototype is poison ivy, which has urushiol, the pentadecacatechol produced by several related plants in the Rhus genus. Unlike erythema multiforme, the erythema multiforme-like eruption is considered to be an id-like reaction occurring with powerful sensitization, penetration-enhancing substances, high concentrations or repeated application of allergens. A 34-year-old female patient presented with multiple iris or annular shaped maculopapular eruption appeared on the margin of skin lesion of systemic allergic contact dermatitis.