Maybe, maybe not: Back pain on either side of the spine (called flank pain by doctors) can be caused by kidney disease, especially if the person doesn't remember hurting his back by lifting or working too much. Other abdominal problems (occasionally serious ones such as a tumor) can also show up as back pain, so evaluation by a doctor is needed. Kidney infections can cause changes in urine or urination, plus fever.
Answered 12/9/2013
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