Question - What is the difference in the urushiol compounds found in poison ivy, poison oak and poison sumac?
Answer- According to the cited article, “The urushiols in poison ivy, poison oak and poison sumac differ only slightly in structure and they cross react, thus the person sensitized to one will react to all.” (Gladman A. Toxicodendron dermatitis: Poison Ivy, Oak and Sumac. 2006 Wilderness Env Med 17(2): 120-128)
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