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Physiological, Cognitive, and Personal Features in the Link Between Placebo-effect and Variability of Pain Reports

Chronic Back Pain Clinical Trial

Official title:
Exploring the Role of Physiological, Cognitive, and Personal Features in the Link Between Placebo-effect and Variability of Pain Reports

Clinical Trial Summary

This study attempt to identify whether and how factors known or considered to be related with analgesic placebo effect or variability of pain reports separately, may contribute to their coupling. Among these factors - personal traits such as optimism, focus of attention, suggestibility, and short-term memory along with characteristics of stress and relaxation. Additionally, the role of pain sensitivity and the individual's pain modulation profile in the relationship between analgesic placebo effect and variability of pain reports will be examined.

Clinical Trial Description

Data will be collected from 130 patients with non-specific chronic back pain that will be recruited for a prospective cross-sectional study. To characterize the main study variables, the participants will undergo the Focused analgesia selection test (FAST) which evaluates within-subjects variability of pain reports, and placebo manipulation containing administration of an inert injection accompanied by a verbal suggestion, which is expected to produce placebo effects. The involvement of additional factors considered associated with the within-subjects variability of pain reports and the placebo response will be explored. Stress and well-being characteristics will be examined by measuring cortisol levels in saliva and in hair, salivary level of Secretory Immune globulin A (SIgA), and an autonomic nervous system function and a stress perception questionnaire. Personal traits such as suggestibility, optimism, and Focus of attention, will be examined using questionnaires. Memory will be assessed by memory task, and factors related to the pain modulation system will be examined using psychophysical tests, and a pain sensitivity questionnaire. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05994118
Study type Interventional
Source University of Haifa
Contact Roi Treister, PhD
Phone 0533839935
Email rtreister@univ.haifa.ac.il
Status Recruiting
Phase N/A
Start date March 21, 2021
Completion date March 2024
View Details
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