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  • Title: Effects of chronic back pain on the perception of experimental heat pain.
    Author: Lautenbacher S, Galfe G, Karlbauer G, Möltner A, Strian F.
    Journal: Percept Mot Skills; 1990 Dec; 71(3 Pt 2):1283-92. PubMed ID: 2150882.
    Abstract:
    19 patients between 23 and 65 yr. of age whose chronic back pain was caused by lumbosacral disk disease and 19 healthy volunteers matched for age and sex were studied. Pain thresholds under phasic and tonic heat stimulation and thermal thresholds for warmth and cold were measured on the right hand. The patients rated any current back pain on a visual analog scale. There was a significant negative correlation between current back pain and the threshold for tonic pain, but there was no correlation between current back pain and either the threshold for phasic pain or temperature sensitivity. Hence, current back pain and experimental tonic pain seem to have an additive effect on pain perception because perceptual qualities are similar. Reduced somatosensory perception of chronic back pain patients could be demonstrated for temperature sensitivity and to a lesser degree for phasic pain, but as a consequence of the "opposing" effect of current back pain, not for tonic pain perception.
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