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Poison ivy rashes can grow slowly, which may give the appearance of spreading. But a rash will only occur on areas of the skin that came into contact with the urushiol oil.
To identify poison ivy, check to see if the plant you're looking at has clusters of 3 leaves, which is a defining characteristic of poison ivy. You can also look for white, translucent fruit on the plant, which is another sign that you're looking at poison ivy.
Poison ivy looks differently during each phase of its growth cycle, and the oily sap on the plant's leaves, called urushiol, can cause an allergic reaction and rash during each season.
These spots look like black lacquer spilled onto the skin. Instead of black spots, some people develop black streaks on their skin. 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.
Poison ivy has leaves in groups of three, a green or reddish tint, and a hairy vine. A poison ivy rash looks like small, red bumps that can sometimes progress into blisters.
Poison ivy leaves vary greatly in their shape, color and texture. Some leaves have smooth edges, while others have a jagged, tooth-like appearance. In the fall, the leaves may turn yellow, orange or red. Poison ivy can produce small, greenish flowers and green or off-white berries.
Poison ivy causes millions of itchy rashes every year, yet many cannot identify this common plant. Learn what poison ivy looks like in spring, summer, fall, and winter.
What does poison ivy rash look like? A poison ivy rash on your skin usually looks like red, itchy bumps. Some people can develop black spots or streaks on their skin instead of the telltale red rash (this is rare).
The hallmark poison ivy rash is red, itchy, and swollen and can also have hives or blisters. You'll likely know what it is when you see it, although a healthcare provider can tell you...
Poison ivy grows as a low shrub or on vines. Each leaf on a poison ivy plant has three smaller leaflets. Touching any part of the plant can cause red, swollen skin, blisters and severe itching. This skin reaction sometimes happens within just a few hours of coming into contact with poison ivy.