Biopsychosocial Contributors to Irritability in Individuals with Shoulder or Low Back Pain

Overview

Journal J Man Manip Ther

Specialty Rehabilitation Medicine

Date 2023 Dec 18

PMID 38108631

Authors

Abigail T Wilson

William J Hanney

Randi M Richardson

Sheila H Klausner

Joel E Bialosky

Affiliations

Soon will be listed here.

Abstract

Objectives: Irritability is a foundational clinical reasoning concept in rehabilitation to evaluate reactivity of the examination and treatment. While originally theorized to reflect tissue damage, a large body of evidence supports pain is a biopsychosocial experience impacted by pain sensitivity and psychological factors. Therefore, the purpose of this study was to examine biopsychosocial contributors to irritability.

Methods: 40 patients with shoulder ( = 20) and low back ( = 20) pain underwent Quantitative Sensory Testing (QST) (Pressure Pain Threshold, Heat Pain Threshold, Conditioned Pain Modulation, Temporal Summation), completed pain-related psychological questionnaires, an Exercise-Induced Hypoalgesia protocol, and standardized irritability assessment based on Clinical Practice Guidelines. Participants were then categorized as irritable or not irritable based on Maitland's criteria and by irritability level based on Clinical Practice Guidelines. An independent samples t-test examined for differences in QST and psychological factors by irritability category. A MANOVA examined for differences in QST and psychological factors by irritability level (high, moderate, low).

Results: Significantly lower heat and pressure pain thresholds at multiple locations ( < 0.05), as well as less efficient conditioned pain modulation ( = 0.02), were demonstrated in individuals categorized as irritable. Heat and pressure pain thresholds were also significantly lower in patients with high irritability compared to other levels. Significantly higher depression and anger, as well as lower self-efficacy, were reported in individuals with an irritable presentation.

Discussion/conclusion: Biopsychosocial factors, including widespread hyperalgesia and elevated psychological factors, may contribute to an irritable presentation.

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