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- Edvardsson, Bengt, et al.
(författare)
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Reversible cerebral vasoconstriction syndrome associated with autonomic dysreflexia.
- 2010
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 11, s. 277-280
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Tidskriftsartikel (refereegranskat)abstract
- A 32-year-old man with a residual spastic quadriparesis from a traumatic C5-C6 fracture experienced a severe thunderclap headache. The medical history revealed an episode of autonomic dysreflexia (AD) due to neurogenic bladder/urinary tract infection (UTI). Blood pressure monitoring at admission revealed hypertension; blood pressure reaching 160/100 mmHg (average blood pressure in these patients and also in this patient being 90/60 mmHg). CT scan of the head, cerebrospinal fluid examination, CT angiography and MR angiography of the brain vessels were normal. Another UTI and a subsequent spell of AD were diagnosed. The patient continued to experience recurrent thunderclap headaches. Selective catheter cerebral angiography revealed multiple calibre changes in the intracranial blood vessels. A diagnosis of reversible cerebral vasoconstriction syndrome (RCVS) due to AD was considered. A magnetic resonance imaging (MRI) of the brain after 2 weeks revealed ischaemic changes in the left hemisphere. Follow-up brain MRI after 3 weeks showed reduction in size of the ischaemic changes, and catheter angiography after 6 weeks demonstrated improvement/normalization. A diagnosis of RCVS could be established. Repeated MRI/CT of the brain after 6 months demonstrated a large infarction in the left hemisphere. RCVS has been reported to occur in various clinical settings. It can occur in the setting of AD in patients with traumatic cervical cord injury. Prompt recognition of RCVS may be of vital importance to avoid further morbidity in patients with spinal cord injury.
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| 4. |
- Grände, Gustaf, et al.
(författare)
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Comparison of the vasodilator responses of isolated human and rat middle meningeal arteries to migraine related compounds
- 2014
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Migraine attacks occur spontaneously in those who suffer from the condition, but migraine-like attacks can also be induced artificially by a number of substances. Previously published evidence makes the meninges a likely source of migraine related pain. This article investigates the effect of several vasodilators on meningeal arteries in order to find a connection between the effect of a substance on a meningeal vessel and its ability to artificially induce migraine. A myograph setup was used to test the vasodilator properties of the substances acetylcholine (ACh), sodium nitroprusside (SNP), sildenafil, prostaglandin E-2 (PGE(2)), pituitary adenylate cyclase activating peptide-38 (PACAP-38), calcitonin gene-related peptide (CGRP) and NaCl buffer on meningeal arteries from human and rat. An unpaired t-test was used to statistically compare the mean E-max(%) at the highest concentration of each substance to the E-max(%) of NaCl buffer. In the human experiments, all substances except PACAP-38 had an E-max (%) higher than the NaCl buffer, but the difference was only significant for SNP and CGRP. For the human samples, clinically tested antimigraine compounds (sumatriptan, telcagepant) were applied to the isolated arteries, and both induced a significant decrease of the effect of exogenously administrated CGRP. In experiments on rat middle meningeal arteries, pre-contracted with PGF(2 alpha), similar tendencies were seen. When the pre-contraction was switched to K+ in a separate series of experiments, CGRP and sildenafil significantly relaxed the arteries. Still no definite answer can be given as to why pain is experienced during an attack of migraine. No clear correlation was found between the efficacy of a substance as a meningeal artery vasodilator in human and the ability to artificially induce migraine or the mechanism of action. Vasodilatation could be an essential trigger, but only in conjunction with other unknown factors. The vasculature of the meninges likely contributes to the propagation of the migrainal cascade of symptoms, but more research is needed before any conclusions can be drawn about the nature of this contribution.
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- Jonsson, Pernilla, 1978, et al.
(författare)
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Holding on to the indispensable medication –A grounded theory on medication use from the perspective of persons with medication overuse headache
- 2013
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 14:43, s. 1-11
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Tidskriftsartikel (refereegranskat)abstract
- Background: Medication overuse headache (MOH) is a chronic headache disorder, caused by overuse of acute medication. To date, it remains unclear why some people overuse these medications. The aim of this qualitative study was to explore how individuals with MOH use medications and other strategies to manage headaches in their daily lives, and their thoughts about their own use of acute medication. Our intention was to develop a theoretical model about the development of MOH, from the perspective of those with MOH. Methods: Data collection and analysis were conducted according to grounded theory methodology. The participants were recruited via newspaper advertisements. Fourteen persons with MOH were interviewed in individual qualitative interviews. Results: The basic process leading to medication overuse was holding on to the indispensable medication. The acute medication was indispensable to the participants because they perceived it as the only thing that could prevent headaches from ruining their lives. The participants perceived headaches as something that threatened to ruin their lives. As a result, they went to great lengths trying to find ways to manage it. They tried numerous strategies. However, the only strategy actually perceived as effective was the use of acute medication and they eventually became resigned to the idea that it was the only effective aid. The acute medication thus became indispensable. Their general intention was to use as little medication as possible but they found themselves compelled to medicate frequently to cope with their headaches. They did not like to think about their medication use and sometimes avoided keeping track of the amount used. Conclusions: This qualitative study adds understanding to the process via which MOH develops from the perspective of those having MOH. Such knowledge may help bridge the gap between the perspectives of patients and health-care professionals.
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- Jonsson, Pernilla, 1978, et al.
(författare)
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Sociodemographic differences in medication use, health-care contacts and sickness absence among individuals with medication-overuse headache
- 2012
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 13:4, s. 281-290
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Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to analyse sociodemographic differences in medication use, health-care contacts and sickness absence among individuals with medication-overuse headache (MOH). A cross-sectional, population survey was conducted, in which 44,300 Swedes (a parts per thousand yen15 years old) were interviewed over telephone. In total, 799 individuals had MOH. Of these, 47 % ( = 370) only used over-the-counter medications. During the last year, 46 % ( = 343) had made a headache-related visit to their physician and 14 % ( = 102) had visited a neurologist. Among individuals aged < 30 years, the number of days/month with headache was greater than the number of days with medication use, whereas the opposite was true for those a parts per thousand yen30 years. Both the proportion using prophylactic medication and the proportion having consulted a neurologist were smaller among those who only had elementary school education than among those with higher education ( = 0.021 and = 0.046). Those with a lower level of education also had a higher number of days/month with headache and with medication use than those with a higher educational level ( = 0.011 and = 0.018). The MOH-sufferers have limited contacts with health-care and preventive measures thus need to include other actors as well. Particular efforts should be directed towards those with low educational levels, and more research on medication use in relation to age is required.
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| 7. |
- Larsson, Bo, et al.
(författare)
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Headache prevalence and characteristics among adolescents in the general population : a comparison between retrospect questionnaire and prospective paper diary data
- 2014
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 15, s. 80-
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Tidskriftsartikel (refereegranskat)abstract
- Background: In the present school-based study, a convenience sample of 237 adolescents in grade 6-9 and second year in high school (age 12-18 years) was recruited from a city and a smaller town. The aim of the study was to compare information on the prevalence and various characteristics of headaches not related to disease in a retrospect questionnaire and prospective daily recordings of headaches in a standard paper diary during a 3-week period. Methods: Besides headache severity, number of headache days, intensity levels and duration of headache episodes were estimated with both assessment methods. Most of the school children suffered from tension-type headaches and a smaller portion of migraine attacks. Results: The overall results showed that school children significantly (p < 0.001) overestimated headache intensity in questionnaires as compared to diary recordings, whereas they underestimated frequency (p < 0.001) and duration (p < 0.001) of headaches. While the correlations on headache severity, frequency and duration between retrospect information in questionnaires and prospective diary recordings were low, the agreement varied with levels of headache characteristics. Conclusions: Our findings concur well with results from a few similar community studies on headache complaints in school-aged children. We recommend that prospective recordings in diaries should be systematically used in clinical practice but also in epidemiological surveys to increase the validity and reliability in estimates of point prevalence of headache complaints in children and adolescents.
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| 8. |
- Larsson, Bo, et al.
(författare)
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Headache prevalence and characteristics among school children as assessed by prospective paper diary recordings
- 2012
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Ingår i: Journal of Headache and Pain. - : Springer Science and Business Media LLC. - 1129-2369 .- 1129-2377. ; 13:2, s. 129-136
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Tidskriftsartikel (refereegranskat)abstract
- In the present school-based study, a convenience sample of 477 students in grades 6-9 and second year in high school from a city and a smaller town recorded daily occurrence and intensity of headaches in a standard paper diary during a 3-week period. Total headache activity (headache sum), number of headache days, intensity level and duration for weekly headaches were estimated. Approximately 85% of the adolescents had experienced headache of any intensity level during the 3-week recording period. On the average, they reported 2.5 headache days per week and a mean intensity level for headache episodes of 1.7. Our estimates for headache of any intensity level (1-5) occurring at least once a week was surprisingly high (73.8%). For the highest intensity level across the whole 3-week period, almost identical proportions of mild and moderate headaches were reported by students (22.3-22.5%), while about twice as many (40.7%) had experienced severe headaches. Girls consistently reported more headaches than boys, in particular of the moderate and severe intensity types. Students in the city also reported more frequent and intense headaches than those in the town. Peak headache activity was observed at noon and in the afternoon and in the days from the middle of the week until weekend. The use of prospective recordings in diaries will further advance our knowledge on the prevalence and characteristics of recurrent headaches among children and adolescents in community samples.
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| 9. |
- Louca, Sofia, et al.
(författare)
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Serotonin, glutamate and glycerol are released after the injection of hypertonic saline into human masseter muscles : a microdialysis study
- 2014
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Ingår i: Journal of Headache and Pain. - : Springer. - 1129-2369 .- 1129-2377. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Chronic myalgia is associated with higher muscle levels of certain algesic biomarkers. The aim of this study was to investigate if hypertonic saline-induced jaw myalgia also leads to release of such biomarkers and if there were any sex differences in this respect. METHODS: Healthy participants, 15 men and 15 aged-matched women (25.7 ± 4.3 years) participated. Intramuscular microdialysis into masseter muscles was performed to sample serotonin (5-HT), glutamate, lactate, pyruvate, glucose and glycerol. After 2 hours 0.2 mL hypertonic saline (58.5 mg/mL) was injected into the masseter on one side and 0.2 mL isotonic saline (9 mg/mL) into the contralateral masseter close to the microdialysis catheter. Microdialysis continued for 1 hour after the injections. Pressure pain thresholds (PPT) and pain were assessed before and after injections. RESULTS: The median (IQR) peak pain intensity (0-100 visual analogue scale) after hypertonic saline was 52.5 (38.0) and after isotonic saline 7.5 (24.0) (p < 0.05). 5-HT, glutamate and glycerol increased after hypertonic saline injection (p < 0.05). Lactate, pyruvate and glucose showed no change. PPT after microdialysis was reduced on both sides (p < 0.05) but without side differences. Pain after hypertonic saline injection correlated positively to 5-HT (p < 0.05) and negatively to glycerol (p < 0.05). CONCLUSIONS: 5-HT, glutamate and glycerol increased after a painful hypertonic saline injection into the masseter muscle, but without sex differences. Since increased levels of 5-HT and glutamate have been reported in chronic myalgia, this strengthens the validity of the pain model. Glycerol warrants further investigations.
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