The pain and discomfort in the upper back may be related to cervical spondylosis, frozen shoulder, ankylosing spondylitis, lumbar dorsal musculoskeletal fasciitis, as well as some of the internal medicine diseases. 1. Cervical spondylosis: Especially cervical spondylosis will cause pain, swelling and discomfort in the back of the neck and shoulders. If the nerves are severely compressed, there will also be numbness and a decrease in the strength of the upper limbs. It can be treated by physical therapy with oral anti-inflammatory and analgesic drugs such as nimesulide and neurotrophic drugs such as methylcobalamin. 2. Frozen shoulder: Frozen shoulder can cause back pain and discomfort, accompanied by shoulder joint pain and activity limitation, and in severe cases, muscle atrophy will occur. It can be treated by applying hot compresses and strengthening the functional exercise of the shoulder joint, such as doing the action of climbing the wall and so on. 3. Ankylosing spondylitis: when ankylosing spondylitis invades the cervical and thoracic vertebrae, it will cause aseptic inflammation at the lesion site, and the inflammation stimulation will also cause back pain and swelling. The treatment is more complicated, and it is recommended to go to the hospital for comprehensive treatment. 4. Lumbar dorsal myofasciitis: When lumbar dorsal myofasciitis strikes, localized sterile inflammation will be formed, which will also cause the symptoms of swelling and discomfort in the upper back. It can be treated with oral anti-inflammatory and analgesic drugs, such as nimesulide and diclofenac sodium. 5. Some internal diseases, such as angina pectoris and lung cancer, can radiate to the upper back and cause pain and discomfort when the condition is severe. There are many causes of back pain and discomfort, it is recommended that patients go to the hospital for medical examination, to clarify the cause of the disease for targeted treatment, do not blindly use drugs.