Poison ivy - oak - sumac

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Poison ivy on the knee

Poison ivy on the leg

Poison oak rash on the arm

Wash the area immediately with soap and water. Quickly washing the area can prevent a reaction, but it doesn't usually help if done more than 1 hour after touching the plant's sap.

Carefully wash any contaminated objects or clothing alone in hot soapy water. Do not let the items touch any other clothing or materials.

An over-the-counter antihistamine such as Benadryl or a steroid cream may help relieve itching.

Determine the following information:

• The patient's age, weight, and condition
• The name of the plant
• The amount swallowed (if swallowed)

The National Poison Control Center (1-800-222-1222) can be called from anywhere in the United States. This national hotline number will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the U.S. use this national number. You should call if you have any questions about poisoning or poison prevention. It does NOT need to be an emergency. You can call for any reason, 24 hours a day, 7 days a week.

See National Poison Control center.

Unless the reaction is severe, the individual will probably not need to visit the emergency room.If you are concerned, call your doctor or poison control.

At the doctor's office, the patient may receive:

• Antihistamine or steroid cream
• Antihistamines or steroids taken by mouth
• Irrigation (washing) of the affected area

Life-threatening reactions may occur if the poisonous ingredients are swallowed or are breathed in (which can happen when the plants are burned).

Typical skin rashes usually go away without any long-term problems. A skin infection may develop if the affected areas are not kept clean.

Review Date: 01/17/2007
Reviewed By: Eric Perez, MD, Department of Emergency Medicine, St. Luke's-Roosevelt Hospital Center, New York, NY. Review provided by VeriMed Healthcare Network.