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Harvard Commentaries
35320
Harvard Commentaries
Reviewed by the Faculty of Harvard Medical School


Are sweats, flushing or a fever associated with passing a kidney stone?


A:

The pain from kidney stones can be very severe. So it could easily cause you to feel hot, sweaty and flushed. But simply passing a kidney stone should not cause a fever.

When someone is passing a stone or has a stone that is hung up along the urinary tract with a documented fever, my first concern is infection in the kidney (pyelonephritis).

Urine that is either all or partly blocked from flowing freely from the kidney, through the ureter, into the bladder and out the urethra is more prone to bacterial infection. That infection is harder to clear because the normal flushing action is disrupted.

Antibiotics alone may not be enough. A specialist (urologist) will evaluate the situation with a CT scan and/or a kidney ultrasound. Then he or she will decide if something must be done immediately to drain the infection.

Here are potential options:

  • A tube is placed in the kidney to drain the infection.
  • The stone is removed by going in through the urethra, through the bladder, and into the ureter containing the stone. The stone is pulled out. This is performed in the operating room.
  • The stone could be broken into small pieces with shock waves (lithotripsy).

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4581, 8465, 8466, 23938,
kidney,bladder,urethra
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