Hypokalaemic periodic paralysis precipitated by diuretic therapy and minor surgery.

Introduction Hypokalaemic periodic paralysis is a rare myopathic disorder characterized by attacks of muscular weakness typically precipitated by exercise or heavy carbohydrate meals. Although usually familial, sporadic cases may occur, often in association with other conditions such as thyrotoxicosis (McArdle, 1974). A patient is now reported in whom the diagnosis of hypokalaemic periodic paralysis was made after minor surgery: prior treatment with a thiazide-like diuretic may have been contributory to the acute attack.