Hypnosis is a natural state of mind in which the critical area of mind (a filter between the conscious minds) is compromised, and the subconscious mind becomes hyper-suggestible to new ideas and patterned responses to environmental stimuli. Examples range from the reactions of subjects during a hypnosis stage show to environmental hypnosis, where someone is seemingly unaware of what has been going on around them while driving their automobile.

Hypnotherapy is the process of hypnosis being used by a trained hypnotherapist to help a person make positive desired lifestyle changes, reduce pain and stress, or to achieve other desired changes based on a referral from a psychologist, dentist, or medical doctor.