Der Schmerz
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Within a prospective longitudinal study of 111 patients with acute radicular pain and lumbar disc prolapse who underwent conservative or surgical treatment, we examined the importance of specific pain coping strategies, which have received little attention in psychological pain research: appeals to "stick it out" on the cognitive level and endurance strategies on the behavioural level. Prior to treatment we conducted a psychological and neurological examination. The psychological tests included the Kiel Pain Inventory (KPI) and the Beck Depression Inventory (BDI). ⋯ Patients in group A were a specially high risk group: at the time of discharge they had no pain, but from the first week after discharge up to the 6-month follow up they had increasing pain. Additionally at the 6 month follow up they seemed less likely to return to work and 8 times more of them had applied for early retirement than in the groups of patients without psychological risk factors. The results suggested several suggestions for modification of medical and psychological therapy for chronic pain patients.
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Cerebral potentials evoked by cutaneous heat stimuli from an infrared laser (LEP) enable overall controls of thin fibre function and anterolateral tract projection, which is of special meaning in the diagnosis of normal and disturbed pain pathways. Owing to the long-wave radiation, the laser energy is completely absorbed within the most superficial skin layers only a few 100 mum in depth and activates only the most superficial afferents, i.e. the thermo- and nociceptive A, delta and C fibres. According to the particular fibre spectrum activated, a single laser stimulus elicits a typical double pain sensation: the first pain appears with a mean reaction time of approximately 400 ms and is described as a sharp and stinging, well-localizable pinprick sensation; this pain is induced by A delta fibre activity with a mean conduction velocity of 14 m/s. ⋯ Both sensations and both evoked potentials can emerge to very different degrees in healthy subjects and in patients with neurological diseases. The diagnostic practicability of LEP is individuals illustrated with reference to patients with syringomyelia suffering from a dissociated sensory loss in cutaneous sensibility. In contrast to conventional electrical nerve stimuli, the laser stimuli allow monitoring of disturbances in the protopathic system projected to the anterolateral columns.
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This study presents the first-ever account of the prevalence of headache syndromes in Germany and the frequency with which they occur in a large representative sample according to the International Headache Society criteria, as set out in the German translation approved by the Classification Committee. 5000 persons representative of the total population were selected from a panel of 30000 households and requested to answer a questionnaire about headache occurrence during their life to date (lifetime prevalence). Of the 5000 persons who were sent questionnaires, 81.2% (n=4061) completed and returned them: 71.4% (n=2902) said they suffered from headache at least occasionally. Of the base population (all respondents: 100% orn=4061), 27.5% (n=1116) fulfilled the criteria for the IHS classification ofmigraine, 38.3% (n=1557) displayed the criteria oftension headache and 5.6% (n=229) said they suffered from headaches, but did not fulfil the criteria for either migraine or tension headache and were therefore classified in the category other headache. ⋯ The importance of the neurological disorders migraine and tension headache is currently seriously underestimated. They are one of the major health problems of our time. There is an urgent need for much greater attention to them by the health system.
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In the present article aspects of reflex sympathetic dystrophy (RSD) and sympathetically maintained pain (SMP) are discussed from the point of view of a basic scientist. The main focus is on the sympathetic nervous system. ⋯ Finally, clinical observations are discussed that seem to bear little or no relation to the models that are available. The general synopsis puts the problem into a wider context.
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In the last few years great interest has developed in new modes of opioid administration; oral transmucosal, transdermal, peripheral, and nasal administration. Oral transmucosal administration of fentanyl citrate (OTFC) has most often been used for premedication in children. Meanwhile, studies on the use of OTFC in cancer patients for postoperative pain management have also been published. ⋯ Nonetheless, intranasal opioids guarantee a rapid rise in opioid plasma concentrations as well as a rapid onset of pain relief. This mode of administration seems to be especially suitable for the treatment of acute pain syndromes, such as breakthrough cancer pain or incident pain. Patient acceptance is high, and no local problems were reported.