The rash from poison ivy, poison oak, or poison sumac is the same rash.
For a minor rash, either try to ignore it or see what the drug store has to offer. Many find relief from Zanfel.
For a large, or a fluid filled rash, you should see a dermatologist. Remember: the rash is an ALLERGIC reaction, not an infection. But if the skin opened, it can become an infection. Family physicians can help you avoid this.
For anything around the eyes or in other very sensitive areas we suggest getting right to the emergency room or medical clinic even if you're otherwise in good health.
POISON IVY HOME REMEDIES
For very bad cases, Prednisone is prescribed, but we are advised that you must take the entire prescription and not stop if the rash eases up.
Even though the rash is an alllergic reaction, Benedryl is, for some reason, not that effective. But you can try it.
The poison ivy, poison oak, and poison sumac rash is about the itchiest thing most people ever experience. Some have said that a very hot shower will stop the itching long enough to sleep for a while. Some say that aluminum deodorant or an oatmeal bath eases the rash. A home remedy such as these seems fairly harmless as long as you don't use water so hot you burn your skin.
You can also try soaking in an oatmeal bath and applying calamine lotion or a paste made from baking soda and water if the rash isn't too severe. Other over-the-counter products may work.
Some people have had luck with soaking a cotton ball in apple cider vinegar and applying it to the rash 3-4 times a day.
Normally, the rash lasts for 2 - 3 weeks, depending on the severity and whether you get medical treatment.
Here is more information about the rash.