Is Your Lower Back Pain Kidney Related?

It may be - if you have lower back pain kidney problems may indeed be causing it.  The reason the two are sometimes confused is because you may feel kidney pain in the lower back. 

Kidney back pain is usually felt where the kidneys are located, which is just above the arches of your pelvis on either side of the lower back. It  can also be referred into the front of the groin and hip area as shown in this diagram below.

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There are differences between normal back pain and lower back kidney pain, however.  If I am assessing someone it is usually a combination of symptoms that would make me think kidney not lower back problem.

Common kidney problems include infection and stones.

Symptoms of an infection include:

• Lower back pain, either one or both sides which may radiate into the groin.
  
• Feeling unwell, possibly sick and maybe vomiting.
  
• Fevers and high temperatures
  
• Urine may be cloudy and may smell different to usual
  
• There may be blood in the urine
  
• You may need to go to the toilet more often than usual.
  
  Bear in mind that you may not have all of these symptoms.

Kidney stones may be painless if they are small, if they are larger they can get wedged in the renal pelvis or ureter as the body tries to pass them, this may cause extreme pain. In addition stones can cause an infection leading to the same symptoms shown above.

 

Lower back pain tends to behave differently

• the pain is often more localised
  
• it may have occurred suddenly
  
• it may be improved or worsened by certain movements and positions
  
• It does not cause a fever or generalised illness
  
• Often, if you have back pain, taking pain relief can make you feel a bit different to normal, even a bit sick, but it's important not to confuse this with kidney problems
  
  Severe lower back pain problems such as cauda equina can affect your bladder and bowels, but again these symptoms are very different to the symptoms described above. You can read more about them in this link to serious back problems.

In my practice I have very rarely come across someone with kidney back pain that has been mistaken for a lower back problem.  You can usually tell the difference straight away.

Is your lower back pain kidney related? The only way to be sure is to go and see your doctor who will be able to diagnose this either with a clinical examination or by organising some tests to check for infection.

References

A useful outline of kidney problems can be found on the NHS direct Web Site

From back pain kidney problems to other causes of lower back pain

Lower Back Pain Toolkit Home Page

12-Sep-2011