We experienced a patient whose left back pain disappeared after treatment combined with Kampo medicine and cervical sympathetic block. A 74-year-old woman developed pain without trigger over one year. The patient received Kampo medicine classified for treating kankiukketsu and cervical sympathetic block. Three months later, the patient was relieved from the prolonged pain. It was suggested that the synergistic effect between Kampo medicine and cervical sympathetic block could relieve prolonged pain more rapidly by bringing more effective relief of autonomic dystonia.