The two types of poison ivy do have slightly different geographic ranges: Eastern poison ivy: Leaves grow on a fuzzy vine ...

Western poison ivy grows like a low shrub or a bush ... Poison oak also has two different types commonly found in the United ...

If you develop black spots or streaks, there tends to be little or no redness and swelling. The medical term for this condition is black-spot poison-ivy dermatitis. It takes time for the rash to ...

A rash from poison ivy, poison oak or poison sumac is caused by an oil found in these plants called urushiol. When this oil touches your skin, it often causes an itchy, blistering rash. Most people ...

Plus, there are several types of poison ivy, and each one can look different depending on the time of year. The leaves of poison ivy plants release urushiol when they're bumped, torn, or brushed ...