POISON IVY
by Susan Lee, M.S., N.P.*
Internal Medicine Associates
How does it spread?
Poison ivy is an allergic contact dermatitis. Development of the rash is caused by the chemical urushiol that is contained within the poison ivy plant. Coming into contact with the plant sap causes skin irritation. All parts of the plant flowers stems, roots and leaves contain this sap. Several hours up to 3 days after coming into contact with the sap, a line of red spots develop followed by fluid filled blisters. Contact with this fluid does not spread poison ivy only contact with the sap. Inhalation of the smoke that has urushiol can cause a great deal of irritation to skin and internally. Washing anything that has come into contact with the sap (clothes, body parts) within 4 hours may stop the rash from developing.Is there a cure?
The goal is to lesson symptoms. If a rash breaks out there are several interventions that may alleviate or lesson symptoms. Oatmeal baths for 20 minutes 4 times a day followed by application of calamine lotion to lesions may be helpful. Over-the-counter hydrocortisone cream, ice, or cool compresses may decrease itching. An oral antihistamine such as Benadryl, Allegra, Clariten, or Zyrtec may lessen/ease symptoms. If swelling/blistering occurs on face, genitals or major body involvement a course of oral prednisone or injection of short acting steroid may lessen symptoms or course of outbreak. It is possible for poison ivy rash to become infected (usually by excessive scratching) and cause a bacterial infection such as impetigo or cellulitis that requires treatment with an antibiotic.Who should I call?
If you have any questions or concerns about your poison ivy outbreak, call your health care provider. All in all, poison ivy is a self-limiting disorder that with or without treatment may last 2-3 weeks.
* Susan Lee, M.S., N.P. is one of six IMA nurse practitioners. NP Lee specializes in general medicine, urgent care and women's health issues. Her office is located in the Internal Medicine North clinical suite of the Landmark Medical Center, 550 Landmark Avenue, Bloomington, IN. NP Lee also sees patients in IMA's Walk-In clinic. The clinic offers IMA patients healthcare for urgent medical concerns or when their personal physician or nurse practitioner is unavailable. NP Lee is accepting patients at 812.355.3255 or toll-free 1.877.604.1551.