Der Schmerz
-
Paroxysmal hemicrania is experienced as headache attacks with pain and accompanying symptoms similar to those of cluster headaches. Attacks are, however of shorter duration, occur more frequently, affect predominantly women and respond reliably to indomethacin. Paroxysmal hemicrania can also occur secondary to an identifiable cause. ⋯ Some patients have been described with both cluster headache and trigeminal neuralgia. These patients should receive both diagnoses. It is important to differentiate these headache entities as specific therapy is needed for each to achieve optimal pain relief.
-
Review Meta Analysis
[Placebo responders in randomized controlled drug trials of fibromyalgia syndrome : Systematic review and meta-analysis].
The superiority of true drug treatment over placebo in reducing symptoms of fibromyalgia syndrome (FMS) is small. Drug placebo treatment of functional somatic syndromes (FSS) such as FMS has been discussed. We determined the magnitude of placebo responders in drug trials with FMS patients to substantiate further research on placebo treatment of FSS. ⋯ The magnitude of responders to placebo in drug trials of FMS is substantial. The efficacy, safety, and costs of drugs recommended for FMS therapy and open-label placebo should be compared in large multinational trials sponsored by public institutions. The English full-text version of this article is available at SpringerLink (under "Supplemental").
-
Nondermatomal somatosensory deficits (NDSDs) are frequently found in chronic pain patients and allude to pain sensitization and pain centralization. In the clinical examination NDSDs are as a rule accompanied by hyposensitivity to touch and heat perception often with a quadrantal or hemibody distribution. ⋯ Most patients with chronic pain disorders as well as those with NDSD often report an antecedent period of high psychobiological stress. The data from functional imaging reveal a complex pattern of a central nervous dysregulation.
-
Besides the responses to nociceptive stimuli other neural function modes of the brain are necessary to obtain a comprehensive understanding of pain processing in humans. During a resting state without extrinsic stimulation the human brain generates spontaneous low frequency fluctuations of neural activity. This intrinsic activity does not reflect random background noise but is highly organized in several networks. Based on the findings of recent functional imaging studies, the role of these resting state networks in acute and chronic pain is discussed.
-
Review Practice Guideline
[Epidural spinal cord stimulation for therapy of chronic pain. Summary of the S3 guidelines].
Epidural spinal cord stimulation (SCS) is a reversible but invasive procedure which should be used for neuropathic pain, e.g. complex regional pain syndrome I (CRPS) and for mostly chronic radiculopathy in connection with failed back surgery syndrome following unsuccessful conservative therapy. Epidural SCS can also successfully be used after exclusion of curative procedures and conservative therapy attempts for vascular-linked pain, such as in peripheral arterial occlusive disease stages II and III according to Fontaine and refractory angina pectoris. ⋯ Epidural SCS should always be used within an interdisciplinary multimodal therapy concept. Implementation should only be carried out in experienced therapy centers which are in a position to deal with potential complications.