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Definition of Poison oak

Poison oak: Skin inflammation that results from contact with the poison oak plant. Chemicals produced by this plant cause an immune reaction, producing redness, itching, and blistering of the skin. Treatment involves use of topical medication.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=4970
Last Editorial Review: 3/19/2012

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