Differences in pain perception and sensory discrimination between chronic low back pain patients and healthy controls

Pain perception threshold (PPT), maximal pain tolerance (MPT) and pain discrimination of CLBP patients and controls were tested. Pain perception threshold was significantly higher in the patient group for two different pain stimuli (electrical and pressure pain). Maximal pain tolerance was significa...

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Bibliographic Details
Published in:Journal of psychosomatic research 1992, Vol.36 (1), p.47-53
Main Authors: Peters, Madelon L., Schmidt, Anton J.M.
Format: Article
Language:English
Subjects:
Adult
Back Pain - physiopathology
Back Pain - psychology
Biological and medical sciences
Discrimination Learning - physiology
Diseases of the osteoarticular system
Diseases of the spine
Electric Stimulation
Female
Humans
Male
Mechanoreceptors - physiopathology
Medical sciences
Middle Aged
Nociceptors - physiopathology
Pain Measurement
Sensory Thresholds - physiology
Sick Role
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Summary:Pain perception threshold (PPT), maximal pain tolerance (MPT) and pain discrimination of CLBP patients and controls were tested. Pain perception threshold was significantly higher in the patient group for two different pain stimuli (electrical and pressure pain). Maximal pain tolerance was significantly higher in CLBP patients only for the pressure pain stimulus. There was no difference between the groups in their capacity to discriminate between painful stimuli of different intensity, as measured by a forced-choice task. It is concluded that CLBP patients have a decreased sensitivity for experimental pain. Two theories which might explain this decreased sensitivity are discussed.
ISSN:0022-3999
1879-1360
DOI:10.1016/0022-3999(92)90113-G