ABSTRACT
A 22-year old man was referred for mental retardation, refractory epilepsy, and chronic renal failure due to congenital anomalies of the kidney and urinary tract since he was an infant. Although hemodialysis was introduced both 3 years and 8 months ago, neither its appropriate safe management nor good quality of life were obtained, because of polyhydruria, psychogenic polydipsia, and his aggressive disruptive behavior in refusing any proper direction. After the fourth making of a shunt vessel with an artificial material, we gave him Orengedokuto to reduce his insomnia, itching, and other indefinite complaints.<br>As a result, his complaints and behaviors improved and he stopped taking too much water on the days before hemodialysis; which then began to work preferably with the proper amount of water exclusion. Moreover, we could reduce the amount of carbamazepine and methylphenidate hydrochloride he required. This case demonstrates that Orengedokuto may have an effect on the central nervous system to improve behavioral problems stemming from developmental disorders in children, or adolescents.