Note: This post was originally published over at DoomandBloom.net. It has been republished here with permission.
Whether you’re outdoors due to a major disaster or just on a wilderness hike, it’s possible that you’ll run afoul of poisonous plants. If you live in the continental United States, expect to find poison ivy, poison oak, poison sumac, and others in the environment. 350,000 cases of poison ivy alone are recorded in the United States every year.
From Left: Poison Ivy, Poison Oak, Poison Sumac, Poisonwood (UFAS)
POISON IVY AND SIMILAR PLANTS
Poison Ivy
Poison Oak
There are, of course, plants that are perfectly harmless that come in “leaves of three”. Other poisonous plants, like poison sumac, have a different look. Poison sumac has 7-13 pointy leaflets and can grow into a small tree upwards of 20 feet in height. Poisonwood is a relative that prefers subtropical areas like the Florida Keys. It is thought that inhaling smoke from burning sumac and poisonwood can cause life-threatening respiratory distress.
Poison Sumac
WHAT CAUSES POISON IVY RASH
Poison Ivy rash can appear “streaky”
The common factor that makes all of the above plants dangerous is the compound “urushiol”. Urushiol is an oily resin that can be found on just about every part of the plant, including vines, leaves, and roots. The chemical irritant sticks to the skin on contact and causes symptoms in 85% of those exposed.
As poison ivy rash is essentially an allergic reaction, it is not, in and of itself, contagious. However, any clothing or body parts that have urushiol on them can cause symptoms when touched by others.
As an aside, the presence of urushiol in poison ivy and other plants appears not to be a defense mechanism; instead, it serves to help them retain water. Deer, birds, and other wildlife can eat poison ivy without ill effects.
DIAGNOSIS AND TREATMENT
Poison Ivy, Oak, and Sumac rash is caused by the compound “Urushiol”
The rash of poison ivy, oak, and sumac causes itching and a red, bumpy rash within a day or two of exposure. The rash continues to spread for a few days and lasts for up to three weeks (more in some cases). Breaks in the skin from itching can cause secondary infections that can become serious.
It’s sometimes difficult to make the diagnosis. Most don’t realize they were exposed during their time outdoors. Exposure may also occur indirectly, for example, by petting the fur of a pet that has been outside. The rash might appear in winter and confuse health providers, but even plants that are dormant can cause reactions.
Therefore, a red, bumpy, itchy rash in anyone who has been in the Great Outdoors or near others who have (including pets) should raise your suspicions. Either poison oak, ivy, or sumac exist just about everywhere in North America except perhaps mountain top and desert environments. As such, it should always be on the list of possibilities in wilderness settings.
Touching kids and pets that have been outside could cause exposure to poison plant toxins
Once you have determined that there has been exposed to poison ivy, it’s important to wash the exposed area and clothing with soap and water as quickly as possible. Urushiol isn’t easy to remove, however, so you might consider soaps that are effective against resins or oil, such as Fels-Naptha or Tecnu.
Common treatments for poison ivy, oak, and sumac rashes include hydrocortisone cream, calamine lotion, capsaicin cream, and antihistamines like diphenhydramine (Benadryl). Some recommend the use of rubbing alcohol on the exposed areas. Cool compresses may are thought to be soothing.
There are many home remedies that are also thought to be effective to treat poison ivy rash. Here are just a few:
- Apple cider vinegar (burns at first)
- Baking soda paste
- Epsom salt or oatmeal baths.
- Chamomile tea bag compresses
- Aloe Vera gel mixed with various essential oils, such as tea tree, lemon, lavender, peppermint, geranium, and chamomile.
- Jewel weed (mash and apply)
There are many others. Natural or commercial creams and ointments should be dabbed on as opposed to rubbing, which may cause more irritation and slow healing. In the worst cases, prescription medications like Medrol (Methylprednisolone) may be needed to speed recovery and prevent complications.
The good news is that, even if you don’t treat the rash, it will go away by itself over 2-3 weeks in most cases.
PREVENTION
Long pants and sleeves will help prevent contact with poison plants
The best prevention is to avoid getting the toxin on your skin. If you can’t avoid exposure, make sure to wear long pants, long-sleeved shirts, work gloves, and boots if you’re doing work in areas known to harbor poison plants.
Some recommend an over-the-counter lotion called IvyX as a preventative. Apply it like you would a sunblock to likely areas of exposure. Theoretically, it prevents the oil from being absorbed by your skin.
The effects of poison ivy, oak, or sumac can make you miserable and even cause secondary infections, something that will decrease your work efficiency in the Great Outdoors. If you know how to identify these plants and be aware of your surroundings, you’ll have less headaches off the grid.
Joe Alton MD
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I have Oak’s in my yard I put a Bread plastic bag over my hand, Pull up the P.I. fold the bag over it without touching it.. throw it in the Trash. or a bigger bag, some days i go thru several Bags.
keebler
Miserable stuff. When I was an Ohio farm boy I used to get it from looking at it.
I’m just getting over a bout of poison oak on my arm (which also transferred over to my stomach, I think from how I was sleeping!). I treated it with apple cider vinegar, after researching online for a natural treatment. It worked really well, symptoms are mostly gone after 2 weeks.
There was a company that produced an injection that prevented the break out even if allergic, taken each spring. Worked on me and about 75% success rate. The company was bought by Pfizer and the product killed. One assumes there is more money in treatment than prevention. they SUCK BTW.
Babies are not born with ti, but we all become allergic at one time or another and to differing degrees after exposure later in life. Breathing the smoke from a fire containing one of the plants is a huge way of getting it. According to the JAMA journals no one is immune, but may be more resistant.
It’s been pretty thoroughly proven that the fluid from the blisters doe not spread Poisson Ivy. Though is appears to, since secondary exposure is usually in long lines due to scratching. Actually this is usually because the oil is still on the affected area, even after a shower. Most soaps do not have the capability to immulsify the oil, because they need to be mild (Ph wise) for skin etc. The oil is more potent that Cobra venom in that it takes fewer PPB’s (parts be billion to cause a rash to present).
I live way out, and I get it from my animals regularly. Just the way it is. I do however have a soap that DOES cut the oil off completely. (This from a friend some of us know). Fels-Naphtha Soap does the job. It is a Lye based soap sold by Purex as a spot remover. Think Gammas lye soap. It is a stronger base than most soaps. When you come in, scrub you hands and arms at least. I do it a couple times a day and it has made a huge difference. Since it’s harsh, back up the scrub with a normal soap immediately so the soap doesn’t irritate you too. What Little I haven’t caught has proved to be minor since it didn’t spread further. Big thanks to PR for that discussion. Anyway.
I will say my biggest finds, and grid down or bug out this isn’t possible, is a blow dryer. Other people use heated spoons, cups of hot water etc .. Applying heat to the itching area to the point you almost feel burned, desensitizes the are for a bout 6 – 8 hours for me. long enough to get sleep and not scratch. (I have NO will power in my sleep). No broken skin, no scaring or infection. JUST FYI.. give it a try (after you remove the oil or you’ll spread it ).. Good post a topic very near and dear to just about every part of my anatomy unfortunately. 🙂
GG58
I just had to take my wife to the doctor last week. She had poison ivy all over her arm, and she is very allergic. Had to get a shot, pills and prescription cream. Most likely got it from taking care of one of our goats that was sick. So beware out there. GG58, I’ll let her know about the Fels Naptha. Thanks
Y’all watch out and be careful