![]() What are the complications of poison ivy exposure? Your healthcare provider may prescribe an oral steroid, such as prednisone, if the rash becomes more severe or the rash forms on the mucous membranes of the eyes, nose, mouth or genitals. Colloidal oatmeal baths (Aveeno®) and cold compresses to soothe itching.Antihistamines, such as diphenhydramine (Benadryl®).Anti-itch creams, including calamine lotion (Caladryl®) and hydrocortisone creams (Cortizone®).In the meantime, these over-the-counter medications can relieve the itchy rash: Rashes from poisonous plants usually go away within a week or two. ![]() How is a poison ivy rash managed or treated? If you haven’t been outdoors or in contact with plants, your healthcare provider will want to rule out other skin conditions or causes. Other allergens and irritants besides poisonous plants can cause contact dermatitis or an itchy rash. Your healthcare provider will look at the rash, assess your symptoms and ask questions to determine if you could have encountered a poisonous plant. Depending on your skin’s sensitivity, a rash may develop within a few hours or days after initial contact. Urushiol oil causes the same allergic reaction - an itchy skin rash - no matter what poisonous plant you touch. What are the symptoms of a poison ivy rash? The itchy rash that develops is a type of allergic contact dermatitis. When your skin touches the oil, an allergic reaction occurs. Poison ivy, poison oak and poison sumac produce an oil called urushiol. Poison sumac thrives in wet, swampy regions. Contact with nonpoisonous sumacs won’t cause an allergic rash.) Each leaf has clusters of seven to 13 smooth leaflets arranged in pairs. (Nonpoisonous sumacs have red, upright berries. Poison sumac: This tall shrub or small tree has drooping clusters of green berries.The shrub sometimes has white or yellow berries. It’s most common in the western United States. The leaves’ undersides are fuzzy and lighter in color than the top. Poison oak: The leaves have three leaflets like poison ivy, but with rounded tips.A poison ivy shrub may have white berries. Its summer-green leaves turn reddish in the spring and yellow, orange or red in the fall. A popular saying is, “Leaves of three, let them be.” Poison ivy grows as a shrub and a vine. Poison ivy: Poison ivy is most known for its leaves.Poisonous plants grow all over the continental United States. You’re more likely to come into contact with a poisonous plant if you have one of these jobs or hobbies: Nearly everyone who touches urushiol gets a poison ivy rash. You don’t have to be exposed to much: 50 micrograms of urushiol - an amount smaller than a grain of salt - is enough to cause a reaction. Up to 90% of people who come into contact with poison ivy oil develop an itchy rash. This rash is a form of allergic contact dermatitis. When you touch a poisonous plant or an object that’s been in contact with a plant, you develop an itchy rash. These plants produce an oily sap called urushiol that brings on an irritating, itchy allergic reaction. Other rash-inducing poisonous plants include poison oak and poison sumac. Poison ivy is a common poisonous plant that causes an itchy skin rash.
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