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Children's Symptoms > Skin - Localized Symptoms > Poison Ivy - Oak - Sumac
Poison Ivy - Oak - Sumac


  • A very itchy, blistering rash caused by contact with the poison ivy plant


  • Localized redness, swelling, and weeping blisters
  • Located on exposed body surfaces (such as the hands) or areas touched by the hands (e.g., the face or genitals). May be carried by pets.
  • Extreme itchiness
  • Onset 1 or 2 days after the patient was in a forest or field
  • Rash is shaped like streaks or lines


  • Caused by oil from poison ivy, poison oak, and poison sumac plants
  • The oil is found in the leaves, stems, berries and roots of the plant.
  • May be carried by pets.

Return to School

  • Poison ivy or oak is not contagious to others. No need to miss any school or child care.

See More Appropriate Topic (instead of this one) If


Call Your Doctor Now (night or day) If

  • Your child looks or acts very sick
  • Difficulty breathing or severe coughing following exposure to burning weeds
  • Looks infected (e.g., soft yellow scabs, pus or spreading redness)
  • You think your child needs to be seen urgently

Call Your Doctor Within 24 Hours (between 9 am and 4 pm) If

  • You think your child needs to be seen, but not urgently
  • Swelling is severe (e.g., the eyes are swollen shut)
  • Severe poison ivy reaction in the past
  • Rash involves more than one fourth of the body
  • Face, eyes, lips or genitals are involved
  • Severe itching (e.g., can't sleep)
  • Big blisters or oozing sores
  • Taking oral steroids for over 24 hours and rash becoming worse

Call Your Doctor During Weekday Office Hours If

  • You have other questions or concerns
  • Rash lasts longer than 3 weeks

Parent Care at Home If

  • Mild poison ivy or sumac and you don't think your child needs to be seen


  1. Steroid Cream: Apply 1% hydrocortisone cream (no prescription needed) 4 times per day to reduce itching. Keep the cream in the refrigerator (Reason: It feels better if applied cold).
  2. Local Cold: Soak the involved area in cool water for 20 minutes or massage it with an ice cube as often as necessary to reduce itching and oozing.
  3. Antihistamines: If itching persists, give Benadryl (no prescription needed) orally every 6 hours as needed (see Dosage table).
  4. Avoid Scratching: Cut the fingernails short and discourage scratching to prevent a secondary infection from bacteria.
  5. More Poison Ivy:
    • If new blisters occur several days after the first ones, your child probably has ongoing contact with poison ivy oil.
    • To prevent recurrences, bathe all dogs or other pets.
    • Also, wash all clothes and shoes that were with your child on the day of exposure.
  6. Contagiousness:
    • Poison ivy or oak is not contagious to others.
    • The fluid from the blisters or rash cannot cause poison ivy.
    • No need to miss any school or child care.
  7. Expected Course: Usually lasts 2 weeks. Treatment reduces the severity of symptoms, not how long they last.
  8. Call Your Doctor If:
    • Poison ivy lasts for over 3 weeks
    • It looks infected
    • Your child becomes worse

And remember, contact your doctor if your child develops any of the "Call Your Doctor" symptoms.

Disclaimer: This information is not intended be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.

Author and Senior Reviewer: Barton D. Schmitt, M.D.

Last Reviewed: 9/15/2011

Last Revised: 8/1/2011

Content Set: Pediatric HouseCalls Symptom Checker

Copyright 1994-2012 Barton D. Schmitt, M.D.

Additional Resources:

 How to use the Adult Health Topics pages
 When to call the doctor
 Reviewers of Clinical Content

Disclaimer: The information contained in these topics is not intended nor implied to be a substitute for professional medical advice, it is provided for educational purposes only. You assume full responsibility for how you choose to use this information.

Always seek the advice of your physician or other qualified healthcare provider before starting any new treatment or discontinuing an existing treatment. Talk with your healthcare provider about any questions you may have regarding a medical condition. Nothing contained in these topics is intended to be for medical diagnosis or treatment.

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