Reaction to poison ivy (4)

I believe the answer is:

rash

(Other definitions for rash that I've seen before include "complaint" , "Over-hasty, reckless" , "Ill-advised" , "Unwisely incurring danger" , "Impulsive - eruption" .)

I've seen this clue in the Universal, the Newsday and the Newsday.com.

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