There are numerous reasons for pain to develop in the lower back around the kidneys, including sprains and strains, infections, sciatica, and herniated discs, according to the National Institute of Neurological Disorders and Stroke. Other reasons for pain around the kidneys include kidney stones, tumors and osteoporosis.
Most lower back pain results from sprains or strains, as the National Institute of Neurological Disorders and Stroke explains. A sprain occurs when the ligaments in the back stretch too much or tear, and a strain is a tear in the muscle or tendon. Both of these may occur when lifting or twisting improperly or lifting something too heavy. An infection isn't a common cause of back pain around the kidneys, but it could become severe if an individual does not seek out medical attention.
Sciatica is a condition that occurs due to the compression of the sciatic nerve, which travels through the buttocks and into the legs, states the National Institute of Neurological Disorders and Stroke. This condition causes a burning or shock-like sensation in the area. Kidney stones may also cause pain in the lower back around the kidneys, but this pain usually develops on only one side of the body. Tumors may also cause pain, but this is rare and usually due to cancer spreading to the area from another part of the body.