See also:

• Recreation: Outdoors: Wildlife: Plants: Poison Ivy, Oak, and Sumac  (9)
• Science: Biology: Flora and Fauna: Plantae: Magnoliophyta: Magnoliopsida: Anacardiaceae: Toxicodendron  (8)

• Allergy: Poison Ivy, Oak, and Sumac - Consumer health resource center providing and overview of the key identifiers, symptoms, and treatments of three topical plant allergies. From eMedicine Health.
• Dr. Greene - Poison Ivy, Poison Oak or Poison Sumac - Advice in a question and answer format.
• First Aid for Poison Ivy - Advice on avoiding and treating reactions from exposures to poison ivy, poison oak and poison sumac, which are the most common plants that cause a skin rash.
• Go Ask Alice!: Poison Ivy, Oak and Sumac - Advice on symptoms and treatment, including when to seek emergency medical care. From Columbia University Health Education Program.
• MedicineNet: Poison Ivy, Oak & Sumac - Includes causes, who is susceptible, treatment if exposed, and prevention.
• Outsmarting Poison Ivy and Its Cousins - US FDA advice on prevention and control of reactions, including common treatments.
• Poison Ivy: an Exaggerated Immune Response to Nothing Much - Brief technical article on allergic reactions to poison ivy, including physiology, treatment options and links to related information.
• Poison Ivy, Oak, and Sumac Information Center - Information on the causes, prevention, and treatment of the itching and painful rashes associated with contact of the oil called urushiol that is found in these plants. Includes numerous links to other information sources and websites on commercial products.
• Poison Ivy Tutorial - Pictures, reference, and quiz on poison ivy's identification, rash, treatment, and the urushiol oleoresin.
• Poison Oak FAQ - General information, its history, treatments, etiquette rules, and anecdotes.
• RXinsider - Short informational monograph on poison ivy/oak/sumac and their treatment.
• Survive Outdoors Inc. - Detailed pictures of poison ivy rashes and lookalikes.