This advice is to be taken at your own risk.
Apply bleach (Chlorox) diluted with water (1:1 or less). This will dissolve and dry up the reaction. Start with a test area and apply carefully after scratching open the blisters.
The best cure is prevention. If you suspect exposure while doing yardwork, for example, never abrade or scratch your skin surface, and continually wash and rinse exposed skin areas as you work, even frequently changing your clothing if the exposure is intense.
Poison Ivy's allergic reaction is caused by the oil it secretes. Poison Ivy oil can lay dormant and viable for many years in both living and dead plant form. It should never be confused with the skin's release of reactionary fluids. The weeping of the skin is an allergic reaction and is not poisonous or contagious, however, the allergic ivy oils are invisible and pervasive. Exposed skin, clothing and bedding material should be thoroughly washed.
BTW: I have suffered severely from poison ivy allergies in the past requiring steroid shots and was dubious, even appalled, at the suggestion of bleach and water. Never have I been more happily surprised in accepting advice. And since, and during, the clearing of the back half of my little square in the American Southeast, I have been pleasantly surprised at the effectiveness of the Chlorox "solution", but mainly at the value of understanding what poison ivy is and how it attacks the skin organ. After my initial horrendous exposure, I effectively used preventive measures which resulted in zero need for treatment. Constantly taking wash down rinses and clothing changes in a controlled and educated manner resulted in this success, with many thanks to the linked website. Education is the key.
The bleach thing hurts when you do it but it is worth it. What hurts less is oat meal baths (my step mother tells me this really works too). If you don't like baths and you take showers then you can take this product and put it on the infected area and let it soak for a while.
Did Bill Nye go to jail?
Who is your role model?
Who would you swap lives with for a day?
A farmer has 19 sheep All but 7 die How many are left?
What is the adverb in the sentence she slept late on Tuesday morning?
How many times can 8 go into 72?
Which is the verb in this sentence - it is such a nice day?
What do prokaryotes and eukaryotes have in common?
What should I know about coronavirus?
What does contingent mean in real estate?
How many stars are in the Big Dipper?
What is the one food you could eat for the rest of your life?
What does a red flag mean on the beach?
What's the weirdest state symbol?
What is OK short for?
Is it possible to die of a broken heart?
Why is saw dust used in refractive index of liquid experiment
Who are the last five people to host the Oscars
Who or what part did Barbara Spear Webster play on Murder She Wrote
Ano ang mensahe ng isang alaala sa aking bayan ni jose rizal
What is the English word for maram oru varam
Does jimmy capps have children
Mga kasabihan tungkol sa pakikinig