To answer this question, let’s first look at what diseases can cause low back pain. Low back pain is a common and frequent disease that endangers people’s health and is very common in clinical practice. It involves more systems and more departments, and sometimes it is not very easy to confirm the diagnosis. Briefly described as follows: (1) Mechanical (structural): that is, we generally say structural low back pain, mainly refers to muscle injury, osteoarthritis, disc herniation and other mechanical factors that cause low back pain. (2) Rheumatic: common ones are ankylosing spondylitis, rheumatic polymyalgia, leukoarthritis, psoriatic arthritis, etc. (3) Endocrine/metabolic: osteoporosis and osteochondrosis can cause low back pain, especially parathyroid and thyroid diseases. (4) Neurological/psychological: for example, neuropathic arthritis, depressive psychosis, etc. can also cause low back pain. (5) Infectious: For example, some infections of the local structures of the low back, such as vertebral infections, septic sacral hip arthritis, and herpes zoster can also cause low back pain. (6) Neoplastic/infiltrative: including giant cell tumor, localized hemangiopericytoma, and others such as multiple myeloma of the blood, etc. can cause low back pain. (7) Confounding: Paget’s disease, retroperitoneal fibrosis, and vertebral sarcoma, for example. (8) Related diseases: such as vascular, gastrointestinal, and genitourinary diseases can also cause low back pain.