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BMC Musculoskeletal Disorders

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Open Access 01-12-2011 | Research article

An increased response to experimental muscle pain is related to psychological status in women with chronic non-traumatic neck-shoulder pain

Authors: Anna Sjörs, Britt Larsson, Ann L Persson, Björn Gerdle

Published in: BMC Musculoskeletal Disorders | Issue 1/2011

Abstract

Background

Neck-shoulder pain conditions, e.g., chronic trapezius myalgia, have been associated with sensory disturbances such as increased sensitivity to experimentally induced pain. This study investigated pain sensitivity in terms of bilateral pressure pain thresholds over the trapezius and tibialis anterior muscles and pain responses after a unilateral hypertonic saline infusion into the right legs tibialis anterior muscle and related those parameters to intensity and area size of the clinical pain and to psychological factors (sleeping problems, depression, anxiety, catastrophizing and fear-avoidance).

Methods

Nineteen women with chronic non-traumatic neck-shoulder pain but without simultaneous anatomically widespread clinical pain (NSP) and 30 age-matched pain-free female control subjects (CON) participated in the study.

Results

NSP had lower pressure pain thresholds over the trapezius and over the tibialis anterior muscles and experienced hypertonic saline-evoked pain in the tibialis anterior muscle to be significantly more intense and locally more widespread than CON. More intense symptoms of anxiety and depression together with a higher disability level were associated with increased pain responses to experimental pain induction and a larger area size of the clinical neck-shoulder pain at its worst.

Conclusion

These results indicate that central mechanisms e.g., central sensitization and altered descending control, are involved in chronic neck-shoulder pain since sensory hypersensitivity was found in areas distant to the site of clinical pain. Psychological status was found to interact with the perception, intensity, duration and distribution of induced pain (hypertonic saline) together with the spreading of clinical pain. The duration and intensity of pain correlated negatively with pressure pain thresholds.

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The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2474/12/230/prepub

Title: An increased response to experimental muscle pain is related to psychological status in women with chronic non-traumatic neck-shoulder pain
Authors: Anna Sjörs
Britt Larsson
Ann L Persson
Björn Gerdle
Publication date: 01-12-2011
Publisher: BioMed Central
Published in: BMC Musculoskeletal Disorders / Issue 1/2011
Electronic ISSN: 1471-2474
DOI: https://doi.org/10.1186/1471-2474-12-230

Keynote webinar | Spotlight on medication adherence

Springer Medicine

An increased response to experimental muscle pain is related to psychological status in women with chronic non-traumatic neck-shoulder pain

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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