The poison ivy containing an oily resin in its stems and saps is the cause of the poison ivy rash. If you touches the plants or items with the resin, and if the resin is on your skin for 10 to 15 minutes, it can develop into an allergic reaction.
The result generally ranges from a mild red bumps to an intense reaction of swelling, blistering and oozing.
The reaction usually appears within two or three days but may occur within eight hours. Once the rash appears, the original oil has all bonded to the victim's skin,
so it can't be spread to others.
Moreover, the fluid in the blisters is also not allergic and will
not pass the rash. The blisters are the body's natural allergic reaction to poison ivy. If the blisters break and ooze, the fluid does
not contain the oils that cause poison ivy rash.
Keywords: poison ivy rash; contagious
