Based on the old movie portrayal of hypnosis and more modern TV shows showing hypnosis used as entertainment, it is no womder that there is skeptisism around hypnosis. However the attitude to hypnosis in the medical world has changed considerably in the last decade.
If you go to PubMed (US National Library of Medicine) there are now 866 clinical trials on the use of hypnosis. In addition there are now over 12,000 articles on hypnosis published in medical and psychological journals. Daily Mail : Does Hypnosis Really Work?Health Magazine