A rash from poison ivy, poison oak or poison sumac is caused by an oil found in these plants called urushiol. Rinse your affected skin immediately after suspected contact. If you scratch your blisters, they may become infected. Urushiol-induced contact dermatitis is caused by contact with a plant or any other object containing urushiol oil. Apply calamine lotion. Vinegar to Get Rid of Poison Ivy Rashes at Home Vinegar works best to heal a poison ivy rash. A poison ivy rash will eventually go away on its own. It’s Said to Reduce Itching and Speed up Healing. 1. Dermatitis is an allergic reaction which can cause a mild to extreme reaction on the skin. Watch for pus coming from the blisters. Some people may experience only mild itching and irritation, while others may develop oozing blisters which are itchy, painful and prone to infection. Direct contact with the plant’s oil is all it takes to cause an allergic reaction. You can use apple cider vinegar or regular vinegar for poison ivy.

Apple Cider Vinegar for Poison Ivy Is a Widespread Remedy for Poison Ivy Rash. Nevertheless, Apple Cider Vinegar May Also Induce Skin Irritation. Toxicodendron pubescens (Atlantic poison oak), one of a large number of species containing urushiol irritants. Method 2 of 4: Providing First Aid. Final Thoughts on Poison Ivy Rash. Here are some steps you can take to help control the itching: Apply an over-the-counter corticosteroid cream for the first few days. Caution. If you have any of the following, go to the emergency room immediately: Difficulty breathing or swallowing . The allergic rash due to poison ivy is because of type-4 hypersensitivity, which is also known as delayed hypersensitivity as it takes 24 to 72 hours to show a response. Cause. With a poison ivy rash, you'll likely see more swelling than with other types of rashes. It is a cell mediated response involving antigen presenting cells including B lymphocytes, macrophages and Langerhan cells and Helper T cells (CD4+ cells).

When this oil touches your skin, it often causes an itchy, blistering rash. But the itching can be hard to deal with and make it difficult to sleep. Poison ivy is a poisonous plant that can cause a skin rash in people who come into contact with the leaves, stem, or roots. Advertisement. Poison ivy’s oil called urushiol causes rashes in about 80 percent or more of all adults and children. Here’s How to Use It Correctly and Safely. Contact with poison oak or poison ivy can cause dermatitis in individuals sensitive to the toxic Urushiol oil contained in the plants 1. Poison ivy rash with swelling about 3 days after direct contact. Most people can safely treat the rash at home. If you notice pus, then your rash is likely infected and you should see a doctor for treatment as soon as possible.