It would be difficult to find an area of scientific interest more beset by divided professional opinion and contradictory experimental evidence…No one can say whether hypnosis is a qualitatively unique state with some physiological and conditioned response components or only a form of suggestion induced by high motivation and a positive relationship between hypnotist and subject…T.X. Barber has produced "hypnotic deafness" and "hypnotic blindness", analgesia and other responses seen in hypnosis—all without hypnotizing anyone…Orne has shown that unhypnotized persons can be motivated to equal and surpass the supposed superhuman physical feats seen in hypnosis.
Hypnosis, when using proven therapeutic procedures, can be a highly effective form of treatment for many mental, psychosomatic, and physical disorders. For example, through the use of regressive techniques, an adult patient may mentally voyage back to a point in youth that was particularly troublesome, allowing the healing of old emotional wounds. Another patient can be led to understand that emotional pain has been converted to physical pain, and that the pain can be eliminated once the source has been addressed. Or, a person suffering from chronic pain can be taught to control the pain without use of medications. There are a number of techniques for correcting dysfunctional behaviors such as self-destructive habits, anxiety disorders, and even managing side effects of various medical treatments and procedures.
Since hypnotherapy is an adjunct form of therapy, used along with other forms of psychological or medical treatment, there are many applications. Hypnotherapy can be used to treat anxiety, phobias, substance abuse including tobacco, sexual dysfunction, undesirable spontaneous behaviors, and bad habits. It can be used to help improve sleep, learning disorders, communication, and relationship issues. Hypnotherapy can aid in pain management and help resolve medical conditions such as digestive disorders, skin issues, and gastrointestinal side effects of pregnancy and chemotherapy. It can also be used by dentists to help patients control their fears or to treat teeth grinding and other oral conditions.