10/07/2025
🪴 Know Poison Ivy — Spot It, Treat It, Avoid It
That notorious “rash plant” hides in plain sight. Here’s how to stay safe and what to do if you get exposed:
What is it & how does it cause a rash
•Poison ivy (and its cousins poison oak/sumac) contain an oil called urushiol in all parts (leaves, stem, roots, sap). 
•Contact with urushiol causes allergic skin reactions in ~50–75% of people. 
•Even dead or dried plants, tools, clothing, or pets can carry urushiol for years. 
Identification tip
•“Leaves of three, let it be.” Each leaf cluster usually has three leaflets. 
•Leaves change color by season: red in spring, green in summer, yellow/orange/red in fall. 
•The rash often appears in streaks or linear patterns (where the oil brushed across your skin) rather than random spots. 
What to do immediately after exposure
•Remove contaminated clothing (don’t let it touch other surfaces).
•Gently wash skin with cool water and mild soap as soon as possible (within 10–15 minutes is ideal) to help remove urushiol. 
•Clean under fingernails (particles can hide under there). 
•Wash tools, shoes, pets (with gloves on) to prevent cross-contamination. 
How to manage a rash / symptoms
•The rash often resolves in 1–3 weeks without medical treatment. •To ease symptoms:
•Cool compresses or lukewarm baths (oatmeal or baking soda) 
•Calamine lotion or hydrocortisone cream (low-potency OTC) 
•Avoid scratching (that increases infection risk) 
•Do not use things that might worsen the reaction, like creams with benzocaine or certain antibiotic ointments without advice. 
When you should see a medical provider
•Rash is widespread or involves face, eyes, mouth, or ge****ls. 
•Blisters are oozing pus or feel warm/tender (sign of infection). 
•Persistent rash not improving in ~2–3 weeks. 
•You experience swelling, difficulty breathing, or exposure via inhaling smoke from burning poison ivy. 
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