Hypnosis can be a highly effective form of treatment for many mental, psychosomatic, and physical disorders. Hypnosis is a trance state in which the hypnotized person is in a heightened, more receptive state of mind. During hypnosis, the patient is not unconscious, does not lose control of his or her faculties, and does not do things under hypnosis that he or she would be unwilling to do otherwise. (Hulton-Deutsch Collection/ CORBIS. Photo reproduced by permission.)