The main cause of poison ivy rash is the oily resin called urushiol secreted by plants such as poison ivy, poison oak, and poison sumac. Mild cases of poison ivy respond well to home remedies and self-care whereas severe rashes may require immediate medical treatment. Poison ivy rash last for two to three days depending on the severity of the reaction and how much of the skin is affected.Different areas of the body can develop a rash at the same time and it feels like the poison ivy infection is spreading all over. The rash can be found anywhere on the body and generally develops in streaks or straight lines over areas of skin.The rash begins as small raised bumps and then develops into full-blown blisters that may ooze liquid and turn crusty. Itchy skin that is prone to inflammation, blisters and redness, is symptomatic of a poison ivy rash.This may cause difficulties in tracing back the cause of the rash to poison ivy especially in cases that involve children. There are also cases when the rash develops only a week after the initial exposure. If the contact has been directly with the plant leaves, the severity of the rash is much stronger. Poison ivy rash develops within a day or two of exposure to the plant.If your immunity is strong, the reaction may not be as strong either. The symptoms of a poison ivy rash depend on the amount of exposure to the plant and the urushiol oil.
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