For clarity reasons, a WSPS will be denoted in what follows by WSPS (U, t) = true. If the WFMS identifies a WSPS for U (R-type(T)) with regard to CT and Ctl (w), it starts a delegation process that returns true if it was able to bypass this WSPS and false elsewhere.
The kidneys are found in the upper back (the âsmall of the backâ, it is often called). Kidney disease can cause pain in this part of the upper back. Pain in this area is common, and often comes from the muscles of the back, or from the spine. Pain from the kidneys is often constant, or can be sharp, like being stabbed.
Musculoskeletal problems are the most common cause of back pain, but occasionally, back pain can be a symptom of kidney problems. If you are experiencing pain that moves towards your side and groin area, or if you have a fever or urinary symptoms, then your kidneys could be the source.our kidneys are located below your ribs, which is why a problem with these organs can often be felt in your upper back or flank (side area).