Wash the affected skin immediately with cool water and soap
Wash any clothing, shoes, tools, and bedding that may have touched the plant
Apply cool, wet compresses for 15 to 30 minutes at a time
Take an oatmeal bath or use colloidal oatmeal on the rash
Apply calamine lotion to dry the rash and reduce itching
Use hydrocortisone cream on small itchy areas
Take an oral antihistamine at night if itching is keeping you awake
Keep fingernails short and avoid scratching
Use a cold shower before bed
Wear loose, breathable clothing to sleep
Seek urgent medical care if the rash is on the face or genitals, is widespread, or causes swelling or trouble breathing