Der Schmerz
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It is now widely recognized that in many chronic pain syndromes the intensity and severity of individually perceived pain does not correlate consistently with the degree of peripheral nervous system tissue damage or with the intensity of primary afferent or spinal nociceptive neurone activity. In particular, stress and anxiety exert modulatory influences on pain depending on the nature, duration and intensity of the stressor and developmental influences on the maturation of the stress as well as the pain system. ⋯ We summarise the studies investigating the neural substrates and neurobiological mechanisms of stress-induced hyperalgesia (SIH) in animals and humans. The review provides new perspectives and challenges for the current and future treatment of chronic pain.
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Cerebrospinal fluid leak, with its typical postdural puncture headache, occurs in 8-25 % of patients after insertion of a spinal catheter for treatment with an intrathecal pain pump. Symptoms are usually self-limiting; only rarely is an epidural blood patch used. ⋯ Leakage could be seen within the spinal catheter, which was responsible for the symptoms. Because of an ongoing infection accompanied by meningitis the whole system had to be removed.
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Review Comparative Study
[Mechanisms of chronification and potential addiction in tumor pain : Comparison with non-tumor pain - A review of the literature].
Due to advances in oncological therapy options and increasing survival rates, the number of cancer patients with persistant pain, who are in need of analgesic therapy has increased. It has been proven that biopsychosocial mechanisms exist in patients with persistant non-cancer pain leading to chronification. Furthermore, addiction has been identified as a complication of analgesic therapy. ⋯ In order to optimize treatment more attention should be paid to the risk of chronification and addiction in cases of chronic persistant cancer pain.
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Randomized Controlled Trial
[Manual trigger point therapy of shoulder pain : Randomized controlled study of effectiveness].
Although chronic shoulder pain is highly prevalent and myofascial trigger points (mTrP) are thought to be found in the majority of patients with shoulder complaints, the influence on the pain mechanism remains unclear. There are only very few controlled clinical studies on the effects of manual trigger point compression therapy. ⋯ The significant improvement of PPT values in the interventional group even at sites that were not directly treated, indicates central mechanisms in pain threshold modulation induced by manual compression therapy. The weaker but still measurable effects of sham therapy might be explained by the sham modality being a hands on technique or by sufficient stimulation of the trigger point region during the diagnostics and PPT measurements.