Cephalalgia : an international journal of headache
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The aim was to evaluate the test-retest reliability of the French translation of the Migraine Disability Assessment (MIDAS) and Headache Impact Test (HIT)-6 questionnaires as applied to episodic and chronic headaches and to assess the correlation between these two questionnaires. The MIDAS and HIT-6 questionnaires, which assess the degree of migraine-related functional disability, are widely used in headache treatment clinics. The French translation has not been checked for test-retest reliability. ⋯ The Pearson correlation coefficient between the MIDAS and HIT-6 questionnaires was 0.48 for episodic headaches and 0.58 for chronic headaches at the first compilation and 0.42 and 0.59 at the second compilation. The test-retest intraclass correlation of the French versions for both MIDAS and HIT-6 questionnaires indicates moderate reliability for episodic headache and substantial reliability for chronic headache. The correlation between the MIDAS and HIT-6 questionnaires is weak for episodic headaches, but approaches a level of 'good' for chronic headaches.
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The aim of this study was to determine if patients with a previous history of postdural puncture headache (PDPH) might be prone to a new episode after spinal anaesthesia. Consecutive patients (n = 258) who had had surgery under spinal anaesthesia were studied. ⋯ Previous PDPH history indicates a higher chance of a new episode of PDPH after spinal anaesthesia. Women are more susceptible to such recurrences.
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In the International Headache Society classification of headaches, the concept of aura is given a key role. It serves as a boundary between 'migraine without aura' and 'migraine with aura'. Historically, the concept of an aura was borrowed from the epilepsy vocabulary; a borrowing that took place in English medicine at the beginning of the 19th century and in French medicine in the mid-19th century. ⋯ Based on the French and English medical literature of the 19th century, two processes have been reviewed: (i) the emergence of the concept of aura, and (ii) the modifications of this concept throughout the 19th century. It appears that the original medical use of the term 'aura' as a set of rising tactile sensations was in use from the 2nd century until late in the 19th century, but then various other symptoms were recognized and the aura gradually became accepted as an early part of the seizure. By the end of the 19th century the aura that preceded a migraine was seen as a similar process, and thought of as part of the migraine sequence.
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Clinical Trial
Occipital nerve blockade in chronic cluster headache patients and functional connectivity between trigeminal and occipital nerves.
Headache syndromes often involve occipital and neck symptoms, suggesting a functional connectivity between nociceptive trigeminal and cervical afferents. Although reports regarding effective occipital nerve blockades in cluster headache exist, the reason for the improvement of the clinical symptoms is not known. Using occipital nerve blockade and nociceptive blink reflexes, we were able to demonstrate functional connectivity between trigeminal and occipital nerves in healthy volunteers. ⋯ These neurophysiological and clinical data provide further evidence for functional connectivity between cervical and trigeminal nerves in humans. The trigeminocervical complex does not seem to be primarily facilitated in cluster headache, suggesting a more centrally located pathology of the disease. However, the significant changes of trigeminal function as a consequence of inhibition of the greater occipital nerve were not mirrored by a significant clinical effect, suggesting that the clinical improvement of occipital nerve blockades is not due to a direct inhibitory effect on trigeminal transmission.