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.
1 The function and purpose of the kidneys are to remove excess fluid and waste products from the body. 2  The kidneys are located in the upper abdominal area against the back muscles on both the left and right side of the body. Causes of kidney pain are mainly urinary tract infections and kidney stones. 2  However, there are many other causes of kidney pain. 3  If a woman is pregnant and has kidney pain she should contact her doctor. 4  Symptoms of kidney pain may include. 5  fever, 6  painful urination, 7  flank pain, 8  nausea and/or vomiting.