The hallmark poison ivy rash is red, itchy, and swollen, and can also have hives or blisters. Poison ivy can be found in nearly every state, so there’s a good chance you will eventually cross paths with it. See pictures and learn about remedies. Poison ivy may seem inevitable when you spend time outdoors, but by taking quick action, you can minimize your exposure and the itchy rash that follows. Get extra strength itch relief from BENADRYL® with this antihistamine cream that also protects your skin. The actual rash that results from the poisonous plants is a form of contact dermatitis, and this dermatitis is what causes the skin irritation. Poison ivy swelling may occur, and this will be normal, however if your face is affected and your eyes swell shut, the services of a doctor may be needed. When it comes to being prepared this poison ivy season, it is essential to have some knowledge of basic poison ivy facts to keep yourself safe from the painful consequences of coming into contact with poisonous plants. Poison ivy rash. Brushing against a poison ivy plant can cause a red, itchy rash with swelling, bumps and blisters. Frequently, the rash takes a linear form (as in the top-left corner of the photo) due to the way the plant sweeps across the skin. INTRODUCTION. When the skin comes in direct contact with an irritating or allergy-causing substance, contact dermatitis can develop. Exposure to poison ivy, poison oak, and poison sumac causes more cases of allergic contact dermatitis than all other plant families combined. Different Approaches to Healing. A treatment that works for one person may not work for the other, so the answer to a poison ivy cure is to determine what works for you and brings you soothing relief. How to Get Rid of Poison Ivy Rashes. If you find yourself itching all over after touching a 3-leaf plant during your nature walk in Asia or North America, don't worry! Poison ivy is a plant that causes a persistent, itchy rash because the.