Just thinking about poison ivy can make you itch. Blistering rashes on your arms and ankles, oozing bumps between your fingers and eyelid-swelling exposures are all-too-familiar summer hazards.

(NEXSTAR) – You may have managed to dodge the dreaded rashes often associated with poison ivy, poison oak or poison sumac, but that doesn’t necessarily mean you’re not allergic. While it’s true that a ...