Generally speaking, primary thoracic spine pain is rare, and simple thoracic spine pain can be caused by long-term improper sitting and sleeping postures. What is common is secondary thoracic spine pain, i.e. thoracic spine pain caused by certain diseases, such as thoracic disc herniation, thoracic spine osteophytes and other structural changes in the thoracic spine, resulting in the onset of nerve compression by the intervertebral disc.