Flank Pain: Could be either muscle strain or internal. Depends on what incidents preceded the pain. Trauma? physical activity? Problems with constipation? Possible kidney issues? So this is probably a "go see a doctor" problem if it is extremely uncomfortable or lasts for days.
Answered 1/22/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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