Polyneuropathy following gastric banding for obesity.  Case report. 
A 20-year-old woman was admitted to hospital with acute, severe neurologic symptoms 16 weeks after gastric banding for obesity.  Her postoperative weight loss was 52 kg.  Before admission she had protracted periods of vomiting with; hypokalemia.  The etiology of the neurologic findings remains unclear.  She responded slowly to adequate nutrition and recovered within 2 years.