Depends on cause: A person whose foot, ankle, or leg swells up, but has no prior reason for doing so (meaning she doesn't already have a known injury or medical problem related to her foot or ankle) should be evaluated in the ER if her own primary care doctor is not immediately available. Treatment depends on the amount of swelling, how fast it is increasing, and the actual cause of the swelling.
Answered 3/7/2020
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