What Causes Kidney Pain?

The kidneys are the bean-shaped organs located in the middle of the back on either side of the spine. Kidneys contain thousands of tiny filters that remove substances from the blood for secretion in the urine. Kidneys are also responsible for the production of hormones that manage red blood cell production, blood acidity, and blood pressure. The kidneys also produce hormones that regulate the metabolism of electrolytes, including sodium, potassium, and calcium. Kidney pain can be hard to distinguish from the pain that occurs due to nerve damage, spinal conditions, and muscular problems. Kidney pain can present on one or both sides, just underneath the ribs, often in the back.