en Pediatric Nephrology Pediatric Nephrology case report case report A case of renal tubular acidosis (RTA) who had gradual onset of paralysis of lower extremities and persisted for a long time is presented. His primary workups were mistaken for muscular dystrophy. Eventually, an abdominal ultrasonography revealed small stones in both of the kidneys and his workup for the stones were in favor of distal renal tubular acidosis and advanced rickets with hypokalemia. He had a dramatic response to alkaline therapy. There are many reports of periodic paralysis in RTA but no report of prolonged paralysis is found in the literature. renal tubular acidosis, paralysis, rickets, hypokalemia 231 233 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-298-817&slc_lang=en&sid=1 A DERAKHSHAN 20031947532846006738 20031947532846006738 Yes From the Division of Pediatric Nephrology, Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, I.R. Iran. GB HASHEMI 20031947532846006739 20031947532846006739 No From the Division of Pediatric Nephrology, Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, I.R. Iran.