Poison ivy, poison oak, and poison sumac are plants that can cause an allergic skin reaction. These poisonous plants contain an oil that can trigger the bodys immune system and produce a rash. Becoming familiar with the appearance of these plants can help a person identify and prevent an allergic rash from exposure.
The Centers for Disease Control and Prevention (CDC) note that while the expression leaves of three, let it be can be helpful for identifying poison ivy and poison oak, this is not true for poison sumac, as this plant usually has clusters of 713 leaves. Additionally, some species of poison ivy and oak may also have more than 3 leaves.
If a person suspects contact with one of these plants, the CDC recommends they wash the exposed skin and scrub their nails. When a rash appears, applying wet compresses or hydrocortisone cream can help reduce itching and blistering. However, if the rash is severe or if someone is having trouble breathing, they should get immediate medical attention.
In this article, we discuss how a person can identify poison oak, poison ivy, and poison sumac, as well as symptoms, treatment, and prevention of the rash.
Toxicodendron is a group, or genus, of woody plants belonging to the Anacardiaceae family. The name derives from the Greek words for toxic tree. The Toxicodendron genus includes a number of plants known for their toxicity that grow throughout the United States.
The key to avoiding exposure to poison oak, ivy, and sumac is being able to recognize them. The U.S. Food and Drug Administration (FDA) provides the below information on how to identify the plants:
Poison oak grows in long vines or tall clumps on the Pacific Coast. It is also present in the southern and eastern United States as a low shrub. The plant has fuzzy green leaves, usually in groupings of three. The leaves of poison oak are typically either deeply toothed or lobed with rounded tips. Yellow-white berries may be present.
Poison ivy grows throughout the 48 contiguous states except for parts of the West Coast. It grows as a small shrub or vine trailing along the ground. The plant may also grow on low plants, poles, and trees.
Every leaf has three glossy leaflets that have toothed or smooth edges. The leaves are green in summer, reddish in the spring, and red, orange, or yellow in the fall. Whitish-yellow berries and greenish-white flowers may be present.
Poison sumac grows as a small tree or tall shrub in swamps or bogs in the Midwest, Northeast, and parts of the Southeast. The leaves consist of clusters of 713 leaflets with smooth edges, which are green in summer, orange in the spring, and red, orange, or yellow in the fall. Yellow-greenish flowers and clusters of whitish-green berries may be present.
When poison oak, ivy, and sumac are damaged, bruised, or burned, they release an oil called urushiol. If it gets on a pesons skin, most people experience an allergic reaction that manifests as an itchy, red rash with blisters or bumps. Exposure to just 50 micrograms, which is less than one grain of table salt, can trigger a rash in 8090% of adults.
Exposure may result from:
Following exposure, the time it takes for a rash to appear depends on whether a person has had a prior rash from poison ivy, oak, or sumac. Typically, if an individual has not had a previous rash from the plants, the rash usually appears within 23 weeks. In someone who has experienced a previous rash from the plants, the rash may manifest within 448 hours.
Symptoms may include:
Most people who get the rash experience the following course:
The CDC recommend these measures if a person is exposed to poison ivy, oak or sumac:
If a rash appears, take the following steps:
A person can do several things to try and prevent a rash. The FDA advises the below practices:
The FDA recommends seeing a doctor if:
Sometimes a person may need more urgent care. The CDC advise immediate medical attention if the rash is severe or if it is on the face or genitals.
If a person has a severe allergic reaction, such as difficulty breathing or swelling, or if they have had a severe allergic reaction in the past, they require immediate help. Call 911 or take them to a hospital emergency room.
Toxicodendron plants, such as poison oak, ivy, and sumac are poisonous plants that can secrete a toxic oil called urushiol. Learning to identify these plants and being able to differentiate them from similar plants is the most important way to prevent exposure. It is also important to remember that exposure can be indirect, such as touching garden tools and pets that have had contact with the plants, or from inhaling smoke from burning plants.
Following contact, a rash may appear within a few hours to 23 weeks. The rash will typically go away without treatment, but medications, such as hydrocortisone cream, calamine lotion, and antihistamine tablets, can relieve itching and make a person feel more comfortable.
If a person has an extreme reaction to these plants, it is advisable they receive immediate medical attention if an exposure occurs.
Follow this link:
How to identify and treat poison oak, ivy, and sumac rashes - Medical News Today
- Retrospective analysis of 397 DABE | CCID - Dove Medical Press - December 3rd, 2023 [December 3rd, 2023]
- Derm In The News: November 26-December 2 - Dermatology Times - December 3rd, 2023 [December 3rd, 2023]
- When is the Best Time to Try Alternative Treatments for Eczema? - National Eczema Association - September 23rd, 2023 [September 23rd, 2023]
- How Eczema Negatively Impacted the Way She Talked to Herself - National Eczema Association - September 23rd, 2023 [September 23rd, 2023]
- Colloidal Oatmeal Effective in Improving Atopic Dermatitis in Black ... - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Combination Treatments in HS Require Further Review - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Addressing Misconceptions, Concerns Around Biosimilar Use - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Native American and Indigenous Communities Face Dermatologic ... - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- Microwave Therapy Successful for Treating Warts in Children - Dermatology Times - September 23rd, 2023 [September 23rd, 2023]
- 9 Best Antifungal Body Washes Review - The Jerusalem Post - September 23rd, 2023 [September 23rd, 2023]
- Patients With Severe Psoriasis Have Higher Risk of Heart Disease ... - AJMC.com Managed Markets Network - September 23rd, 2023 [September 23rd, 2023]
- Swimming and skin: What to know if a child has eczema - Harvard Health - May 20th, 2023 [May 20th, 2023]
- Experts demand traffic-light labels to show strength of eczema cream - Daily Mail - May 20th, 2023 [May 20th, 2023]
- Its mosquito season. Here are tips for treating bites, preventing them in the first place - Yahoo News - May 20th, 2023 [May 20th, 2023]
- How new EU incentives will help all patients get the best treatments - Euronews - May 20th, 2023 [May 20th, 2023]
- Consistent Use of Ceramide-Containing Products Combined With ... - Dermatology Times - May 20th, 2023 [May 20th, 2023]
- The Best Swimming Skin and Hair Products | livestrong - Livestrong - May 20th, 2023 [May 20th, 2023]
- These 13 Household Items Contain Smells That Are Harmful To ... - Rock 92.9 - May 20th, 2023 [May 20th, 2023]
- FDA Approves First Pill to Treat Moderate-to-Severe Crohn Disease - HealthDay News - May 20th, 2023 [May 20th, 2023]
- Feds investigating eczema cream after two Oregon babies found with high levels of lead in blood - OregonLive - January 27th, 2023 [January 27th, 2023]
- Heres how to treat eczema and other skin conditions for cold weather - The Hindu - January 27th, 2023 [January 27th, 2023]
- Atopic eczema - NHS - November 23rd, 2022 [November 23rd, 2022]
- Seborrheic dermatitis - Symptoms and causes - Mayo Clinic - November 23rd, 2022 [November 23rd, 2022]
- Oatmeal skincare is the perfect solution for sensitive skin (+ best products to try) - Lifestyle Asia Singapore - November 23rd, 2022 [November 23rd, 2022]
- Eczema - StatPearls - NCBI Bookshelf - October 21st, 2022 [October 21st, 2022]
- Cold, dry weather can trigger eczema - how to reduce damage to the skin this winter - Express - October 21st, 2022 [October 21st, 2022]
- Eczema on lips nhs - kved.erxe.de - August 29th, 2022 [August 29th, 2022]
- xrfkc.vitalhaskap.pl - August 29th, 2022 [August 29th, 2022]
- Atopic eczema and alopecia areata - cyasn.kugel-lernfoerderung.de - August 29th, 2022 [August 29th, 2022]
- north shore zipline oahu - owk.tophouse.shop - August 29th, 2022 [August 29th, 2022]
- nak stock - vbi.maxense.shop - August 29th, 2022 [August 29th, 2022]
- Atopic eczema and alopecia areata - zayqif.hydra-market.shop - August 29th, 2022 [August 29th, 2022]
- fort worth map with zip codes - prxrzj.rids-gear.shop - August 29th, 2022 [August 29th, 2022]
- Ear Eczema: Symptoms, Causes, and Treatments - Healthgrades - August 29th, 2022 [August 29th, 2022]
- The Mutha Body Oil Is Worth the Splurge, Especially If You Have Sensitive Skin - POPSUGAR - August 29th, 2022 [August 29th, 2022]
- Are You Allergic to Your Beauty Products? A Patch Test Might Tell You - Allure - August 29th, 2022 [August 29th, 2022]
- Stinky sweat turns out to have a surprising health benefit : Goats and Soda - NPR - August 29th, 2022 [August 29th, 2022]
- Makeup for Eczema-Prone Skin: Considerations, Products, and Tips - Healthline - July 13th, 2022 [July 13th, 2022]
- Eczema Vaccinatum: Symptoms, Diagnosis, and Treatment - Healthline - July 13th, 2022 [July 13th, 2022]
- What Is Topical Steroid Withdrawal in Atopic Dermatitis Treatment? - Everyday Health - July 13th, 2022 [July 13th, 2022]
- A new 'cure for eczema' pill has been signed off but who is allowed to take it? - Cosmopolitan UK - July 13th, 2022 [July 13th, 2022]
- What Causes Dandruff And How To Get Rid Of It, According To A Dermatologist - Fatherly - July 13th, 2022 [July 13th, 2022]
- Allergies on the rise due to climate change - BusinessWorld Online - July 13th, 2022 [July 13th, 2022]
- Cryotherapy Treatment: Uses and Benefits - newschannelnebraska.com - July 13th, 2022 [July 13th, 2022]
- Mutations of Filaggrin Leading to Eggs & Milk Allergies - Physician's Weekly - June 18th, 2022 [June 18th, 2022]
- How AI & the Pandemic Are Changing the Skin & Hair Clinic Experience - The Quint FIT - June 18th, 2022 [June 18th, 2022]
- How to treat your childs dry skin in winter - Lowvelder - June 15th, 2022 [June 15th, 2022]
- Topical steroid: Types, uses, side effects and treatment as revealed by doctors - Hindustan Times - June 15th, 2022 [June 15th, 2022]
- Psoriasis in the Belly Button: Symptoms, Causes, and Treatment - Healthline - June 15th, 2022 [June 15th, 2022]
- In his last days, my father asked for Yiddish music - Forward - June 15th, 2022 [June 15th, 2022]
- Throwing away the water after cooking rice? Know how it could benefit your skin and hair - Times Now - June 15th, 2022 [June 15th, 2022]
- Family 'devastated and numb' as boy, 9, dies a day after breaking his arm - Coventry Live - June 15th, 2022 [June 15th, 2022]
- Happy Cappy Not Just For Babies; Everyone With Sensitive Skin Can Benefit - Pediatric Shampoo Granted Trademark in New Campaign: 'No Scalp Left... - June 15th, 2022 [June 15th, 2022]
- Eczema on black skin: Pictures, symptoms, and treatment - June 11th, 2022 [June 11th, 2022]
- Eczema on the Ears or Eyebrows: How to Cope - Everyday Health - June 11th, 2022 [June 11th, 2022]
- What People With Eczema Need to Know About Self-Screening for Skin Cancer - National Eczema Association - June 11th, 2022 [June 11th, 2022]
- How to protect children with eczema from scratching until they bleed - Channel NewsAsia - June 11th, 2022 [June 11th, 2022]
- Autism, allergies and other diseases and disorders afflicted baby boomers, too - PolitiFact - June 11th, 2022 [June 11th, 2022]
- Is saltwater good for the skin? What to know Beaufort South Carolina The Island News - The Island News - June 11th, 2022 [June 11th, 2022]
- What's trending? The most-read stories on APAC beauty market and consumer insights - CosmeticsDesign-Asia.com - June 11th, 2022 [June 11th, 2022]
- Canada to require a warning be printed on every cigarette - Coventry Live - June 11th, 2022 [June 11th, 2022]
- Holistic Acne Treatments That Are Better Than What You've Been Doing - The List - June 11th, 2022 [June 11th, 2022]
- Almirall: Eight out of Ten Patients Maintained Skin Clearance at One Year in Lebrikizumab Atopic Dermatitis Monotherapy Trials - PR Newswire UK - June 7th, 2022 [June 7th, 2022]
- Woman left balding and bedbound by chronic eczema clears the condition with a 9 face cream - The Independent - June 7th, 2022 [June 7th, 2022]
- Poll: Six in 10 people would eat food that has fallen on the floor - Coventry Live - June 7th, 2022 [June 7th, 2022]
- The itch that rashes: Treating and understanding eczema - El Paso Inc. - June 5th, 2022 [June 5th, 2022]
- Celebrities With Eczema Speak Out - Everyday Health - June 5th, 2022 [June 5th, 2022]
- Lotion, Cream, Gel, and Ointment Similarly Effective for Childhood Eczema - HealthDay News - June 5th, 2022 [June 5th, 2022]
- Antibiotics Given Before C-sections Are Not Linked to Asthma, Eczema in Young Children - Pharmacy Times - June 5th, 2022 [June 5th, 2022]
- Eczema Skin-Care Products Market Size, Scope and Forecast | Alliance Pharma Plc., Bausch Health Companies Inc., Bayer AG., AbbVie Inc., Eli Lilly and... - June 5th, 2022 [June 5th, 2022]
- What are the benefits of ceramides for the skin? - Medical News Today - June 5th, 2022 [June 5th, 2022]
- Some Allergies Associated With Lower Risk of SARS-CoV-2 Infection - Smithsonian Magazine - June 5th, 2022 [June 5th, 2022]
- The CDC is sending monkeypox vaccines to people at high risk in a race to prevent the spread - CNBC - June 5th, 2022 [June 5th, 2022]
- Missing Sikeston teen may be heading to Kansas City area - KMBC Kansas City - June 5th, 2022 [June 5th, 2022]
- Should you cleanse or exfoliate first? What to know - Medical News Today - June 5th, 2022 [June 5th, 2022]
- Dry Skin: Eczema, Itchy Skin, Causes, Treatments, Relief, Types - May 17th, 2022 [May 17th, 2022]
- Foods to Eat and Foods to Avoid If You Have Eczema - The Beet - May 17th, 2022 [May 17th, 2022]
- 3 Women With Eczema Describe the Ways They Combat Nighttime Flare-Ups - Verve Times - May 17th, 2022 [May 17th, 2022]
- The Challenges of Parenting a Child With Eczema - Verve Times - May 17th, 2022 [May 17th, 2022]
- Manuka Honey Benefits for Skin: Benefits, Masks, and More - Greatist - May 17th, 2022 [May 17th, 2022]