Hypokalaemic periodic paralysis is an uncommon but potentially life threatening clinical syndrome. It should consider in any child with recurrent motor paralysis. A positive family history with a low potassium level during attacks, will confirm the diagnosis If recognized and treated appropriately, patients recover without any clinical squeal. No extensive investigations are needed. KCL, acetazolamide, spiranolactone and lifestyle modificationswill help them to bring to normal activity.