Patients with ankylosing spondylitis, if treated actively in the early stages, the condition is not severe. However, if the patient continues to seek irregular and improper medical care, it is possible to develop severe complications such as kyphosis and spinal ankylosis. In severe cases, patients may even self-harm. Therefore, it is advised that patients with ankylosing spondylitis seek treatment early, before the onset of spinal ankylosis. The treatment plan mainly includes non-steroidal analgesics, such as diclofenac sodium sustained-release tablets, medications to control the condition, such as sulfasalazine tablets, and biologic treatments. With the above treatments, the condition of ankylosing spondylitis can be controlled. (Medication use should be under the guidance of a doctor.)