NEVER burn poison ivy, the inhaled smoke can cause serious lung reaction. This is important even if the person burning it is not allergic because it can infect other people for a good distance. (neighbors)
All parts of it contains the oil, including the roots. It should be wrapped in a sack and thrown away.
Any clothing, gloves, tools, PETS or shoes ect that come into contact w the oil will cause an outbreak if touched later. This oil can stay on items for a very long time.
It is a MYTH that washing/showering after contact will prevent a breakout. This usually only spreads it worse to other parts of your body (I know this from experience unfortunately)
If the rash is bad enough, you can see a dr, a regular primary care is fine, and they will prescribe some steroid pills, you just take them for like 5 days or so.They are very inexpensive/generic, and you will notice a huge difference in the itching by the next day.