A poison ivy rash typically appears as red, itchy, and bumpy skin that often develops in streaks or lines where the plant's oil (urushiol) contacted the skin. The rash usually starts within 12 to 48 hours after exposure and can last for two to three weeks
. Key visual features include:
- Red patches that are intensely itchy and swollen.
- Raised bumps that may develop into fluid-filled blisters.
- Blisters can break open, ooze fluid, and then crust over.
- The rash often appears in a linear or streaky pattern, reflecting the way the plant brushed against the skin.
- In rare cases, some people develop black spots or streaks instead of the typical red rash, known as black-spot poison-ivy dermatitis
The rash commonly occurs on areas of the body that had direct contact with the plant, such as arms, legs, or face. The itching and rash can be severe and persist for several weeks after the last exposure
. In summary, a poison ivy rash looks like red, itchy, swollen skin with bumps and blisters that may ooze and crust, often in streaky lines corresponding to contact with the plant
