11232
document
Hypnosis treatment for severe irritable bowel syndrome : investigation of mechanism and effects on symptoms . Hypnosis improves irritable bowel syndrome ( IBS ) , but the mechanism is unknown . Possible physiological and psychological mechanisms were investigated in two studies . Patients with severe irritable bowel syndrome received seven biweekly hypnosis sessions and used hypnosis audiotapes at home . Rectal pain thresholds and smooth muscle tone were measured with a barostat before and after treatment in 18 patients ( study I ) , and treatment changes in heart rate , blood pressure , skin conductance , finger temperature , and forehead electromyographic activity were assessed in 24 patients ( study II ) . Somatization , anxiety , and depression were also measured . All central IBS symptoms improved substantially from treatment in both studies . Rectal pain thresholds , rectal smooth muscle tone , and autonomic functioning ( except sweat gland reactivity ) were unaffected by hypnosis treatment . However , somatization and psychological distress showed large decreases . In conclusion , hypnosis improves IBS symptoms through reductions in psychological distress and somatization . Improvements were unrelated to changes in the physiological parameters measured .
11233
Intervention_Psychological
Hypnosis treatment
11234
Intervention_Psychological
Hypnosis
11235
Intervention_Psychological
biweekly hypnosis sessions and used hypnosis audiotapes
11236
Outcome_Physical
All central IBS symptoms
11237
Outcome_Pain
Rectal pain thresholds
11238
Outcome_Physical
rectal smooth muscle tone , and autonomic functioning ( except sweat gland reactivity )
11239
Outcome_Mental
somatization and psychological distress
11240
Outcome_Mental
psychological distress and somatization