Rinse skin with cool running water and mild soap as soon as possible
Wash any clothing, shoes, tools, or gear that may have touched the plant with detergent and hot water
Apply cool compresses (10–20 minutes at a time, several times daily) to reduce itching and swelling
Take an oral antihistamine for itching (follow label directions)
Apply calamine lotion to itchy areas as directed
Use over-the-counter hydrocortisone 1% cream/ointment on mild rashes as directed
For more severe itching, use prescription-strength topical steroids from a clinician if needed
Avoid scratching and keep nails short to prevent skin infection
Keep the rash clean and covered with loose, breathable clothing if needed
Do not use hot water, which can worsen itching
Avoid getting the rash wet with contaminated water; pat dry gently
Wash hands thoroughly after touching the rash or applying treatments
Seek urgent care or contact a clinician if you have trouble breathing or swelling of the face/lips/gums
Seek medical care urgently if rash is widespread, severe, blistering is extensive, or symptoms worsen rapidly
Seek medical care if rash is on the eyes, genitals, or large areas of the body
Seek medical care if you suspect infection (increasing redness, warmth, pain, pus, fever, or worsening swelling)
Seek medical care if you don’t improve within 1–2 weeks or if you need stronger treatment