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An increased response to experimental muscle pain is related to psychological status in women with chronic non-traumatic neck-shoulder pain
Linköping University, Department of Clinical and Experimental Medicine, Rehabilitation Medicine. Linköping University, Faculty of Health Sciences.ORCID iD: 0000-0003-2530-4126
Linköping University, Department of Clinical and Experimental Medicine, Rehabilitation Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Anaesthetics, Operations and Specialty Surgery Center, Pain and Rehabilitation Center.
Rehabil and Research Centre Torture Victims, Copenhagen.
Linköping University, Department of Clinical and Experimental Medicine, Rehabilitation Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Anaesthetics, Operations and Specialty Surgery Center, Pain and Rehabilitation Center.
2011 (English)In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 12, 230-230 p.Article in journal (Refereed) Published
Abstract [en]

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). less thanbrgreater than less thanbrgreater thanMethods: 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. less thanbrgreater than less thanbrgreater thanResults: 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. less thanbrgreater than less thanbrgreater thanConclusion: 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.

Place, publisher, year, edition, pages
BioMed Central , 2011. Vol. 12, 230-230 p.
Keyword [en]
Quantitative sensory testing, trapezius myalgia, muscle, pain, hypersensitivity, centralization, pressure pain thresholds, pain drawing, pain intensity, questionnaire
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Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-72138DOI: 10.1186/1471-2474-12-230ISI: 000296376400001OAI: oai:DiVA.org:liu-72138DiVA: diva2:457508
Note

Funding Agencies|Swedish Council for Working life and Social Science|2004-02892007-0760|

Available from: 2011-11-18 Created: 2011-11-18 Last updated: 2017-12-08

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Sjörs, AnnaLarsson, BrittGerdle, Björn

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