Pain in the lower back is one of the most frequent reasons for consultation. Many people immediately associate it with poor posture, contractures or muscle wasting, but this pain does not always have a mechanical origin. In certain cases, the lower back can be the place where the body reflects an internal problem, especially when the kidneys are under stress.

Understanding how to differentiate muscle pain from a kidney signal can make a big difference in detecting a problem in time that, if ignored, can silently advance.