Ankylosing spondylitis does not usually lead to herniated lumbar discs. A herniated lumbar disc is usually caused by long-term poor sitting posture, engaging in weight-bearing physical activities, obesity, excessive weight, etc. It can manifest as back pain similar to ankylosing spondylitis, but the pain caused by lumbar discs is usually more pronounced after activity, such as when engaging in long-term bending activities, mopping, and other physical activities. or when standing still for a long period of time, the pain in the lower back will be more pronounced. Sudden increases in abdominal pressure, such as sneezing, may cause a sudden increase in pain, but the pain may be relieved by resting in bed. In contrast, the pain caused by ankylosing spondylitis is typically rest pain oriented, mainly manifesting as more pronounced lumbosacral pain after prolonged sitting, standing or lying down, and the symptoms can be alleviated after getting up and moving appropriately. The diagnosis of lumbar disc herniation can be clarified by magnetic resonance imaging and CT examination of the lumbar spine.