[Facts and Cases of Diseases and Observations Are Described from My Own Experience].

Facts and cases of diseases and observations are described from my own experience. 1) Refer carefully with correct recognition of the levels of the vertebral body and cord segment. 2) The spinal nerve root is defined as the part of the peripheral nerves in the subarachnoid space. 3) The importance of referred pain and its mechanisms of symptoms are described. 4) The technique of straight-leg-raising test is useful for the diagnosis of Guillain-Barre syndrome and the detection of the lumbar narrow canal. 5) Insidious onset and progress of the calf atrophy are described. Although the cause of this case remains unknown, I naming this disease "OMURANAE"and arousing interest around it.