Delayed reaction: Symptoms do not appear for hours or even days. Poison ivy and similar plants cause some of the best-known delayed hypersensitivity reactions. When a person first touches the plant, no reaction occurs for the first 24 to 48 hours. Read more: http://www.Livestrong.Com/article/253484-types-of-delayed-reaction-allergies/#ixzz2vcsli9lf.
Answered 6/4/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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