About a week: It will taper down over a week or so. If it itches, consider taking antihistamine.
Answered 5/19/2017
4.9k views
Wasp stings swelling: Sting reactions can normally take several days to go down but should be improving by then. It may take a week or more to resolve completely. If it is worsening or not improving then you should have it looked at. You could have developed a local skin infection at the site of the sting.
Answered 9/7/2017
4.9k views
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