Poison Oak: Symptoms, Effects & Treatment

Poison oak can be found on the western coast of North America and southeastern portions of the United States. It excretes urushiol oil, which most people are allergic to and which creates a number of nasty effects when it comes into contact with the skin.

Itching

• Poison oak causes a maddening itch in affected areas. Ironically, scratching at it often spreads the oil around, making the itch worse.

Rash

• The skin affected by poison oak will become very red. The rash often has a linear shape, caused by brushing up against the plant.

Swelling

• Skin touched by poison oak will swell up, making it difficult to wear clothes or jewelry.

Blisters

• Poison oak causes blisters to break out in the affected area. Contrary to popular belief, the fluid emitting from blisters will not spread the poison oak infection further.

Time Frame

• The effects of poison oak appear anytime between 12 hours and two days after exposure, and often last for two or three weeks.