Contemporary hypnotism uses a variety of suggestion forms including direct verbal suggestions, "indirect" verbal suggestions such as requests or insinuations, metaphors and other rhetorical figures of speech, and non-verbal suggestion in the form of mental imagery, voice tonality, and physical manipulation. A distinction is commonly made between suggestions delivered "permissively" and those delivered in a more "authoritarian" manner. Harvard hypnotherapist Deirdre Barrett writes that most modern research suggestions are designed to bring about immediate responses, whereas hypnotherapeutic suggestions are usually post-hypnotic ones that are intended to trigger responses affecting behaviour for periods ranging from days to a lifetime in duration. The hypnotherapeutic ones are often repeated in multiple sessions before they achieve peak effectiveness.[39]

Surgery/Anesthesiology (In unusual circumstances, hypnosis has been used as the sole anesthetic for surgery, including the removal of the gall bladder, amputation, cesarean section, and hysterectomy. Reasons for using hypnosis as the sole anesthetic may include: situations where chemical anesthesia is contraindicated because of allergies or hyper-sensitivities; when organic problems increase the risk of using chemoanesthesia; and in some conditions where it is ideal for the patient to be able to respond to questions or directives from the surgeon);

Visualization and imagery techniques involve the induction of a relaxed state followed by the development of a visual image, such as a pleasant scene that enhances the sense of relaxation. These images may be generated by the patient or suggested by the practitioner. In the context of this relaxing setting, patients can also choose to imagine themselves coping more effectively with the stressors in their lives.

You are getting very sleepy.... While hypnosis is often associated with sideshow performances, it's not a magical act. Rather, it’s a technique for putting someone into a state of heightened concentration where they are more suggestible. Therapists use hypnosis (also referred to as hypnotherapy or hypnotic suggestion) to help patients break bad habits, such as smoking, or achieve some other positive change, like losing weight. They accomplish this with the help of mental imagery and soothing verbal repetition that eases the patient into a trance-like state; once relaxed, patients’ minds are more open to transformative messages. Hypnosis can also help people cope with negative emotional states, like stress and anxiety, as well as pain, fatigue, insomnia, mood disorders, and more. In rare cases where patients are resistant to hypnoses, alternative therapies may be used.  

It is used for a wide variety of applications, and studies into its efficacy are often of poor quality[2] which makes it difficult to determine efficacy. Several recent meta-analyses and systematic reviews of the literature on various conditions have concluded that the efficacy of hypnotherapy is "not verified",[3] that there is no evidence[4][5] or insufficient evidence[6][7] for efficacy.