***Nice to know: if exposed to poison ivy: wash in lots of soapy, warm water. Use a soap designed to cut grease, such as Dawn dishwashing soap. Remember, too, that if it's on your hands it could also be on your clothes. Tossing dirty clothes in with the rest of the laundry may result in transferring the poison ivy oil onto the rest of the wash. So keep them separated, again washing in warm to hot soapy water and rinsing thoroughly.
It's hard to keep from scratching but a liberal application of hydrocortisone cream may help relieve the itch. Other natural remedies include Jewelweed. This plant grows in profusion in Central New York. Mashed up and applied directly to the exposed area, Jewelweed is said to help heal the inflammation.
more about the treatment for poison ivy exposure can be read here:
Poison ivy treatment tips
Natural methods for the treatment of poison ivy