Hypnosis for mental health, pain, and performance: a clinical guide

Executive overview

Most people associate hypnosis with stage tricks and loss of control. The opposite is true: hypnosis is a learnable tool for gaining control over mind and body. Three specific brain changes underlie the hypnotic state — reduced conflict detection, stronger mind-body signalling, and decreased self-referential processing.

The core insight: hypnosis works by changing brain state first, making cognitive and somatic flexibility possible in ways that talking alone cannot achieve as quickly.

What happens in the brain during hypnosis

• Dorsal anterior cingulate cortex (dACC) activity decreases — the brain's conflict detector quiets, reducing distraction
• DLPFC–insula connectivity increases — the prefrontal cortex gains stronger influence over body sensations, including pain and digestion
• DLPFC–posterior cingulate connectivity inverts — the self-referential default mode network disengages, enabling cognitive flexibility
• The gastric acid study illustrates the DLPFC–insula link: hypnotized subjects raised acid secretion 87% imagining food, and cut it 40% imagining none — even overriding a pharmacological trigger by 19%

Hypnotizability and how it is measured

• Roughly one third of adults are not hypnotizable; about 15% are highly hypnotizable
• The Hypnotic Induction Profile (HIP) assigns a score from 0 to 10 based on a structured hypnotic experience
• The Spiegel Eye-Roll test: look up at the ceiling while closing the eyelids — visible sclera (white) as the eyes close indicates higher hypnotizability; visible iris indicates lower
• People lower on the scale still benefit; they tend to respond better when given explanations rather than pure experiential induction
• OCD patients cluster toward the low end: over-evaluation of experience overrides the ability to simply have one

Clinical applications

• Stress: teaches dissociation of somatic reaction from psychological reaction — body floats somewhere safe while the stressor is viewed on an imagined screen; one thing to do about it is then visualised
• Insomnia: self-hypnosis protocols have resolved sleep problems lasting 15+ years in some patients
• Pain: the brain treats chronic pain as if it were novel; hypnosis teaches categorical reappraisal — does this pain signal re-injury or healing? — to modulate its intensity
• Phobias: avoidance leaves only fear-based memories; hypnosis lets patients accumulate positive experiences, broadening the association network
• PTSD and trauma: hypnosis creates a brain state closer to the dissociative state during the original trauma, facilitating state-dependent memory retrieval and restructuring
• Children: a randomised trial in Pediatrics showed hypnosis cut invasive imaging procedure times by 17 minutes with reduced anxiety and pain
• Focus and attention: self-hypnosis can train the mind to narrow in and sustain engagement; potentially useful for ADHD though evidence is preliminary

Trauma treatment in practice

• Voluntary exposure is essential — being brought to a traumatic memory against one's will does not produce the same therapeutic result
• The clinical structure: (1) establish physical safety ("body floating somewhere comfortable"), (2) view the trauma on an imagined screen with the rule that the body stays comfortable regardless, (3) shift to the other side of the screen — what protective action did you take?
• Every trauma survivor engages in some self-protective strategy; surfacing that reframes the narrative from pure victim to active agent
• State-dependent memory (Gordon Bower) explains part of the mechanism: hypnosis approximates the dissociative state of the original event, making the memory more accessible and reprocessable
• Goal is not re-exposure for its own sake but gaining control over access — being able to turn the memory on and off on one's own terms

Self-hypnosis and the Reveri app

• Most patients are seen once or twice, then taught to practise independently
• The Reveri app (reveri.com) provides structured protocols for pain, stress, focus, insomnia, eating, and smoking cessation
• Sessions range from 1–2 minutes to ~15 minutes; two thirds of users report benefit from even the one-minute refresher
• Repeated activation likely strengthens the relevant networks via long-term potentiation, though longitudinal neural evidence is not yet established

The role of breathing

• Slow exhale with extended expiration time induces parasympathetic activity by increasing thoracic pressure and allowing the heart to slow
• Breathing sits at the boundary of conscious and unconscious control — making it a practical bridge into the hypnotic state
• A deep breath followed by slow exhale is used as part of the induction itself

When not to rely on hypnosis alone

• Hypnosis can mask pain signals that indicate real medical problems — a clinician should rule out underlying pathology first
• Highly obsessional or over-controlling thought patterns reduce hypnotizability and therapeutic response
• Always seek a practitioner licensed in their primary discipline (psychiatry, psychology, medicine, dentistry) who also has specific hypnosis training
• Professional referral directories: Society for Clinical and Experimental Hypnosis (SCEH.us) and the American Society for Clinical Hypnosis

Peak performance states

• Classical pianists and athletes in flow describe states indistinguishable from hypnosis: absorbed, non-evaluative, not narrating their own actions
• Hypnotic states are not limited to stillness or relaxation — they can occur during intense physical or creative activity
• The common factor is suspended self-monitoring, not physical quietude