Eperisone hydrochloride is effective in improving muscle tension in neck-shoulder-arm syndrome, frozen shoulder, and low back pain disorders. It can also treat spastic paralysis caused by the following diseases: cerebrovascular disorders, spastic spinal cord paralysis, cervical spondylosis, post-surgical sequelae (including cerebrospinal tumors), post-traumatic sequelae (spinal cord trauma, head trauma), amyotrophic lateral sclerosis, infantile cerebral palsy, spinal cerebellar degeneration, spinal vascular disorders, subacute optic neuromyelopathy, and other cerebrospinal disorders.