Poison ivy - oak - sumac

Definition

Poison ivy, oak, or sumac poisoning is an allergic reaction that results from touching the sap of these plants. The sap may be on the plant, in the ashes of burned plants, on an animal, or on other objects that came in contact with the plant, such as clothing, garden tools, and sports equipment.

Small amounts of sap can remain under a person's fingernails for several days unless it is deliberately removed with very good cleaning.

This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.

Alternative Names

Poison oak; Poison sumac; Sumac - poisonous; Oak - poisonous; Ivy - poisonous

Poisonous Ingredient

One poisonous ingredient is the chemical urushiol.

Where Found

• Bruised roots, stems, flowers, leaves, fruit
• Pollen of poison ivy, poison oak, and poison sumac

Symptoms

• Blisters
• Burning skin
• Itching
• Redness of the skin
• Swelling

Symptoms can affect the eyes and mouth in addition to the skin.

Home Treatment

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. Flush the eyes out with water.

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.

Before Calling Emergency

Determine the following information:

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