Home Remedies for Poison Ivy (Including Plain Hot Water?)

Poison ivy

Poison ivy, with its “leaves of three.”

by James Hubbard, M.D., M.P.H.

Lately, several desperate-sounding readers have asked about home remedies for poison ivy. I feel sorry for them. Poison ivy, poison oak, and poison sumac—whichever grows in your neck of the woods—can cause some of the worst itching known to mankind. And it can last as long as a couple of weeks.

And all you who brag you can wallow in the stuff without as much as a scratch: Your day may be coming. As with other allergies, you can not be allergic all your life and, wham, one day you feel the itch and see the blisters. After that, you’ve become one of the chosen—allergic for life.

There’s no vaccine and no surefire cure for rashes from poison ivy and the like. But here are some things you can do.

 

1. Know what the poison plant looks like and avoid it.
If you know you’re allergic, first thing is you better dang-well know what the plant looks like and stay away from it. Leaves of three, let them be.

I know, I know. Not all leaves of three are poison ivy, oak, or sumac. But, if you’re like me and not really an expert in plant identification, I’d advise not taking a chance. Even vines and stems without the leaves can cause the rash, so unless I’m sure, I’m staying away from vines also.

Jewelweed flower

A flowering spotted jewelweed. This plant is a natural home remedy for poison ivy.

2. Look out for jewelweed too.
If you do get into poison ivy, oak or sumac, find some jewelweed. Grab a bunch, crush it up, stems and all, and smear it on your skin. Apparently jewelweed likes growing in some of the same places the three-leaf stuff likes—boggy, wet bottomland. Know what it looks like. No, I mean really know. I’d hate to have you smearing a bunch of poison ivy all over you.

3. If you wash the oil off soon enough, you might not get the rash.
The oil that causes the rash is called urishiol. A brush against a leaf, a vine, whatever, and it’s on you. Sometimes I think it hops on some people who even dare venture nearby. I know it can get in smoke because I’ve see some bad cases of poor souls who inadvertently burned some with other brush.

The sooner you can wash it off the better—hopefully within fifteen minutes. Maximum is probably about four hours. Use soap and water, or rubbing alcohol. Some people swear by Tecnu products for poison ivy/oak/sumac, such as Oak-N-Ivy. Jewelweed soap can be super too.

Don’t forget to wash your clothes, and your dog. But, a word of advice about the latter: Be sure to bathe your furry pal with gloves so you don’t the poison ivy back on you. You’ll probably want to jump back in the shower after you’re done, just in case.


Where to Find the Poison-Ivy Remedies

The links below are for your information. I’m not vouching for the companies, and I don’t make any money if you buy from them.

Here’s where you can get the pharmaceutical products:

  • You can find some Tecnu products at the Tec Labs store.
  • Oak-N-Ivy is available in various places, including REI, or you can order it from your choice of companies.
  • Pharmacies sell hydrocortisone cream, calamine lotion and oral antihistamines (Benadryl) over-the-counter.

You can buy or make these poison-ivy remedies:

  • Jewelweed soap: Hard to find. You can order it from the Alternative Nature Herbal Online Store.
  • Witch-hazel astringent: Widely available at pharmacies.
  • Quercetin drops: Hard to find. I’m not positive you can make it, but it does come from onions. You can order the drops from Source Naturals.
  • Oatmeal baths: Widely available, including at Walmart.


Home Remedies to Treat the Rash and Itching

The rash is normally red and raised, with blisters. It usually occurs in the spots where you’ve come in contact with the plant. I say usually because some rashes start that way and seem to spread to other parts of your body. That’s rare, and it’s not the open blisters or soap you use. Blisters don’t spread the rash. Rather, it’s a more severe, systemic allergic reaction you’re having. The treatments are the same.

For the rash and itching, you can try more jewelweed soap and maybe some witch–hazel astringent. Quercetin drops have anti-inflammatory effects and can be taken orally and rubbed on the rash. Cool baths, cool compresses, and oatmeal baths can help the itching.

Here’s one you may not know: If none of the other is working and the itching is driving you crazy, try getting in the shower with the water as hot as you can stand it. (Obviously don’t burn your skin.) Apparently this depletes your body’s supply of itch-causing histamines and can give you relief for a few hours.

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Conventional At-Home Treatments

Hydrocortisone cream may help. The strongest you can get over-the-counter is one percent. Calamine lotion is an option. Don’t get the Caladryl since it can cause its own allergic reaction. Oral antihistamines like diphenhydramine (Benadryl) ease the itching but can make you drowsy (sometimes a good thing.)


Doctor Treatments

A shot or course of oral steroids, or both, may help—even shorten the course of the rash. (No matter what, you’re likely in for a few days to a couple of weeks of the misery.) You might also get a stronger steroid cream from the doctor.

If you run fever or there’s pus in some blisters, or you’re having any other signs of infection, get to the doctor. If that’s not possible, start on antibiotics if you have them.


What Home Remedy Works for You?

There are probably about as many home remedies as there are people with poison ivy. Some work for some; nothing works for everyone. Trial and error is the name of this game.

So, please help all our readers and do tell. What’s your favorite home remedy?

And while you’re at it, please share your worst horror stories regarding those pretty green leaves.


Poison ivy photo by Jan Miller, U.S. Fish and Wildlife Service. Jewelweed photo by Dr. Thomas G. Barnes, U.S. Fish and Wildlife Service.

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Categories: Bushcrafting, DIY Preparedness, Herbal Remedies, Homeopathy, Medical, Self-reliance, Wildcrafting | Tags: , , , , , , , , | 4 Comments

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4 thoughts on “Home Remedies for Poison Ivy (Including Plain Hot Water?)

  1. Pingback: Poison | Spirit of Turpentine

  2. Lupe Bak

    For the most part, antihistamines are safe. Having said that, antihistamines can have side effects which, if the antihistamine is not properly administered, can be serious. The truth is, all medications have side effects. Some are mild, as in the case of an aspirin, unless you have stomach ulcers or aspirin sensitivity and others are more serious such as the side effects from chemotherapy, but for the most part, antihistamine side effects are fairly mild. The newest antihistamines are probably about the safest medications that there are. But there are differences between the various antihistamines and their side effects.`

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  3. I’ve got a bad case of poison ivy from cleaning out a barn over the weekend. It’s almost Easter and I have a late summer itch…Thanks for the tips.

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