Symptoms of compression of the nerve by thoracic vertebra 12 include the following: first, abdominal discomfort. Thoracic spine 12 compression of the nerve can appear abdominal skin sensory disorders, thus abdominal discomfort. Second, the symptoms of paraplegia. Because there are spinal cones in the spinal canal of the 12 thoracic vertebrae, paraplegia of the lower limbs will occur when the spinal cones are compressed, and there will be sensory disorders of the lower limbs, numbness and weakness of the lower limbs, as well as urinary and fecal disorders. At the same time, various reflexes are lost, such as knee tendon reflex, Achilles tendon reflex, and testicular reflex. In this case, an MRI will be performed to further diagnose the cause of these symptoms, which may be due to compression of the nerves.