Until 30 years ago there were few clinical trials examining hypnosis for any type of medical or
psychological problem. Scientific evidence for clinical hypnosis was limited to anecdotal and clinical
reports. In recent decades, however, there has been a growing body of scientific research. Numerous
controlled studies have found clinical hypnosis as effective or more effective than various treatments
for pain including standard care, relaxation training, support group without hypnosis, attention
control, autogenic training, biofeedback, and physical therapy.
In 1958 both the American Medical Association and the American Psychological Association recognized
hypnotherapy as a valid medical procedure. Since 1995 the National Institute of Health (NIH) has
recommended hypnotherapy as a treatment for chronic pain. Clinical hypnosis is one of the evidence-based
complementary and integrative health approaches covered by the Veterans Administration medical benefits
package when deemed clinically necessary by their care team per VA directive.
This growing number of psychophysiological studies on hypnosis and pain has enhanced the scientific
legitimacy of hypnosis, has identified several measurable physiological phenomena, and has put to rest
the misconception that hypnosis is solely a placebo effect (David R. Patterson, 2013). Studies of
laboratory pain reduction show sympathetic responses (e.g., heart rate and blood pressure),
electrocortical activity at various sites, endogenous endorphin release, and regional blood flow.
Clinical hypnosis demonstrates a series of physiological changes that can be monitored by brain
activity.
A pilot study (Forester-Miller, H. 2017) on the integration of clinical hypnosis with patients in cancer
care found significant changes in reported quality of life including improved emotional well-being
(e.g., feeling less sad, feeling less nervous, experiencing less fear of dying, and being less worried
that their condition will get worse), improved physical well-being (e.g., felt less ill, less bothered
by the side effects of treatment, and less trouble meeting their family needs), and improved functional
well-being (e.g., more able to enjoy life, more able to sleep well, more able to enjoy the things they
usually do for fun, and more content with the quality of their life).