Der Schmerz
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The psychophysiology of visceral pain is--different from cardiac psychophysiology--much less well investigated due to the invasiveness of its methods and problems associated with reliably and reproducibly stimulating as well as recording of the gastrointestinal tract. Despite these problems, the last 30 years have documented a number of psychophysiological phenomena such as the perception (interoception) of visceral stimuli, the effect of emotions and stress on visceral sensations, and the effect of visceral processes on cortical processing. This was mainly due to the application of neurophysiological techniques (cortical imaging and stimulation) in these investigations.
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Chronic pelvic pain syndrome (CPPS) presents as a multicausal disorder. Complex interactions of psychological factors with somatic dysfunctions are crucial to the development and maintenance of CPPS. ⋯ The psychopathological comorbidities in subjects with CPPS require specific evidence-based diagnostic and treatment methods to reduce psychopathology and improve quality of life.
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There are no data available on the prevalence of disabling abdominal pain and menstrual cramp in adults in Germany. ⋯ Persons in the general German population frequently reported slightly disabling abdominal pain and menstrual cramp; however, severely disabling abdominal pain and menstrual cramp were rarely reported. Abdominal pain and menstrual cramps were associated with additional somatic complaints and depression.
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It has now been established that sleep deprivation or fragmentation causes hyperalgesia which cannot be explained by a general change in somatosensory perception. However, it has not yet been clarified which of the sleep stages are most relevant for this effect. The seemingly paradoxical effects of sleep deprivation on pain-evoked brain potentials on the one hand and the subjective pain report on the other hand suggest complex changes in gating mechanisms. ⋯ Together with results from animal research the finding that endogenous pain modulation (CPM) is impaired by sleep deprivation suggests that the serotoninergic system mediates the effect of sleep deprivation on pain perception. However, other neurotransmitters and neuromodulators still have to be considered. The clinically relevant question arises why sleep deprivation induces hyperalgesia more easily in certain individuals than in others and why this effect then has a longer duration?
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Controlled Clinical Trial
[Evaluation of the German new back school : Muscular physiological characteristics.]
According to the biopsychosocial approach of the German new back school the core objectives are sustainable improvement of physical and psychosocial health resources. Subjects with non-specific low back pain were investigated to evaluate the desired physical effects. ⋯ The adjustment effects at 12 months follow-up indicate a delayed positive influence of the new back school program on muscular physiological parameters. Individuals with chronic non-specific back pain showed a long-term profit from participation in the new back school program due to the initiated orientation to a modified more active lifestyle.