Nothing: This is an allergic reaction to a specific plant substance. It occurs only on areas exposed, because it takes 3 weeks to go through the entire process, it may appear to spread but it does not. You may need a week to see all the places which got a little sap on them. Once you rinse off with water, there will be no new places to react. Learn to recognize & avoid these plants. If it is severe, get a.
Answered 4/12/2019
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