Hello,
Rash due to poison ivy takes some time to go away. Once it begins, the rash will usually clear on its own by 14-21 days. Treatment is directed at controlling the itching. You may take oral antihistaminics like benadryl or zyrtec.Also apply calamine lotion as it has a soothing effect on the skin. You can apply OTC steroid cream but it is only helpful if applied right away, before blisters appear, or much later, when the blisters have dried up. Compresses with cool water or Burrow’s solution (available without prescription) can help dry the ooze faster.
Severe cases like extensive blistering and when rashes are present on the face may need oral steroids. But they are available only on prescription. So if the symptoms become severe then please consult a dermatologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Not sure but I know that as a child I had allergic reactions to poison ivy and would be covered head to toe in a rash.