When it comes to back pain, many people first think about whether their kidneys are out of order, which is related to the fact that people’s kidneys grow in the waist. In fact, the diseases that cause low back pain are not only the kidneys, but also some other organs. Several diseases that mainly cause low back pain are summarized as follows: 1. Kidney disease Mostly persistent dull pain on one or both sides of the upper back next to the spine, with occasional paroxysmal sharp pain or radiating pain. The pain is generally unrelated to posture and activity, and there is no lumbar muscle tension. If accompanied by hematuria, or swelling of the limbs should be paid great attention. 2, gynecological diseases Some women have low back pain during their menstruation. It is mostly a persistent dull pain in the lower back, without lumbar muscle tension. Some women with pelvic inflammatory disease can also cause pain and discomfort in the lower back, but mostly accompanied by other symptoms such as abnormal leucorrhea. 3, lumbar muscle strain This is the most common one. It is caused by trauma or overexertion, and is most common in athletes. Most of the pain is localized in the lower back and the lumbar muscle is tense. 4, hypertrophic spondylitis Most commonly seen in the elderly, generally heavy pain when waking up in the morning, alleviated after activity, pain relief when exposed to heat, lumbar muscle tension is more obvious. 5, osteochondrosis Most often seen in middle-aged women, associated with multiple pregnancies. Low back pain is more widely oriented, often with muscle aches and pains, weakness of the limbs, bending and deformation of the bones, etc. 6.Lumbar intervertebral disc herniation pain in the lower back, due to position changes can cause severe pain, lumbar muscle tension, movement is obstructed. 7.Lumbar myofasciitis Mostly caused by rheumatism, the pain point is widely unfixed. Pain is related to the climate, no lumbar muscle tension. 8, spinal rheumatoid widespread lumbar pain, late deformity, can not straight back. Prevalent in adolescents. Low back pain is widespread and closely related to climate and season. 9.Lumbar spine tuberculosis is common in adolescents. Slow onset, mostly hidden pain, with symptoms of systemic toxicity caused by tuberculosis, such as fever, night sweats, etc. Therefore, the occurrence of lumbar pain must identify the cause of symptomatic treatment.