Clinical manifestations of Anacardiaceae dermatitis

(A) Acute, streak-like, edematous, and erythematous dermatitis without vesicles after poison ivy brushed across the face. Courtesy of Fitzsimons Army Medical Center Dermatology slide teaching library.
(B) Acute, streak-like, vesicular dermatitis after poison ivy (Toxicodendron radicans) contact. Courtesy of Fitzsimons Army Medical Center Dermatology slide teaching library.
(C) "Black-spot" poison ivy dermatitis: Note the black discoloration in the central portion of the edematous plaques due to plant resin.
(D) Widespread erythema and edema associated with intense pruritus after carrying logs of the poisonwood tree (Metopium toxiferum) of the family Anacardiaceae.