Erythema multiforme-like eruption urticarial

Erythema multiforme-like eruption [urticarial papules and plaque eruptions (UPPE)]... 

Several contact allergens, e.g., metal, topical medicaments, wood and industrial chemicals have been reported to cause erythema multiforme-like eruptions. These allergic contact reactions can be confirmed by positive patch-test reactions. The morphology of these reactions includes target-like erythemacular, and urticarial lesions. Such eruptions have been described as UPPE to distinguish them from the erythema-multiforme (Goh 1989). 

Machaerium scleroxylon) in a hobbyist handling the wood. Plants reported to cause erythema multiformelike eruption include poison ivy (Toxicodendron) (Schwartz and Downham 1981 Mallory et al. 1982), primula Primula obconica) (Hjorth 1966) and mug-wort (Artemesia vulgaris) (Kurz and Rapaport 1979). Mallory et al. (1982) reported urticarial eruptions with black deposits on the skin of four patients with Toxidocendron radicans dermatitis. Urticaria, erythema multiforme-like eruptions, in a patient from Rhus dermatitis was reported by Schwartz and Down-ham (1981). They recommended that patients with such reactions should be screened for systemic involvement as previous reports have shown that nephritis can be an associated feature (Meneghini and AngeUni 1981 Fisher 1986). 

Garcia-Bravo B, Rodriguez-Pichardo A, de-Pierola SF, Camacho F(i995) Airborne erythema-multiforme-like eruption due to pyrethrum. Contact Dermatitis 33 433 Goh CL (1988) Erythema multiforme-l e eruption from trinitrotoluene allergy. Int J Dermatol 27 650-651 Goh CL (1989) Urticarial papular and plaque eruption. A manifestation of allergic contact dermatitis. Int J Dermatol 28 172-176... 

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