Allergic reaction: If sudden onset, most commonly it's an allergic reaction to something you ate or touched.If it doesn't go away in 48 hours must see a doctor. Try an antihistamine like benadryl (diphenhydramine).
Answered 1/5/2017
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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
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