Back discomfort may be related to fasciitis, cervical spondylosis, and some medical conditions. Fasciitis and muscle strain in the back can lead to localized aseptic inflammation, which produces inflammatory substances that can cause vague pain and discomfort as well as muscle tension in the back. Cervical spondylosis compresses the nerves that innervate the back, resulting in abnormal nerve function, which can also cause vague pain and discomfort in the back. When ankylosing spondylitis involves the thoracic spine, it can also cause vague pain and discomfort in the back. When the back is not cold, blood circulation will be slowed down, which will also cause vague pain and discomfort. Some internal diseases, such as cholecystitis, chronic gastritis, and heart disease, can also cause vague pain and discomfort in the back. If the symptoms of back pain and discomfort occur, it is recommended that the patient go to the hospital for medical examination to clarify the cause of the disease and receive regular treatment.