In dermatology, hypnosis may help decrease pain and pruritus in the skin; intervene in psychosomatic aspects of skin diseases; and lead to the resolution of some skin diseases, including verruca vulgaris. Suggestion without formal trance induction may be effective in some cases. Sulzberger and Wolf reported on the use of suggestion to treat verrucae.
Hypnosis can regulate blood flow and other autonomic functions that are not usually under conscious control. The relaxation response that occurs with hypnosis also affects the neurohormonal systems that regulate many body functions. Studies on the influence of hypnosis on immediate immune responses have shown the ability of hypnotized volunteers to significantly decrease the flare reaction to the histamine prick test. Similarly, in one study, the effect of hypnotic suggestion on delayed cellular immune responses has shown significant effect on the size of erythema and on palpable induration but no significant effect in other studies.
A report by Braun on different allergic responses; dermatologic reactions; and effects on seizure disorders, pain control, and healing in the same individual with multiple personality disorder (now called dissociative identity disorder) shows how much influence the mind can have on physiologic reactions and disease processes, depending on the personality present. The report also described the differences in physiologic responses and disease conditions for selected individuals under hypnosis compared with their normal waking state.
Hypnosis may be used to increase healthy behaviors, to decrease situational stress, to reduce needle phobias, to control harmful habits (eg, scratching), to provide immediate and long-term analgesia, to ameliorate symptoms related to diseases (eg, pruritus), to accelerate recovery from surgery, and to enhance the mind-body connection to promote healing. Hypnosis can be especially helpful in dealing with skin diseases that have a psychosomatic aspect. Griesemer, who was trained both in dermatology and in psychiatry, recorded the incidence of emotional triggering of dermatoses in his patients during 1 year in his practice. He developed an index for various skin diseases, with 100 indicating an absolute psychosomatic component and zero indicating no psychosomatic component to the skin disease.