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Poison oak rash on the arm Poison ivy on the knee Poison ivy on the leg Rash

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Poison ivy - oak - sumac rash

Symptoms: A red rash and extreme itching. The rash erupts in streaks or patches where the plant touched the skin. The rash includes red bumps and may also form large, weeping blisters. The reaction can vary from mild to severe. Hospitalization is sometimes required. The rash usually appears within a couple of days after contact with the plant's oils. The worst stage is often from days 4 to 7. The rash may last for 1 to 3 weeks. References: Auerbach PS. Wilderness Medicine. 4th Ed. St. Louis, MO: Mosby:2001;194-195. Text Continues Below Marx JA, Hockberger RS, Walls RM, eds. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 5th Ed. St. Louis, MO: Mosby; 2002:1647-1648,2200. Habif, TP. Clinical Dermatology. 4th Ed. St. Louis, MO: Mosby;2004:25,85-89,402.

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