Cephalalgia : an international journal of headache
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Cutaneous allodynia is common in migraine. In the majority of previous studies on allodynia in migraine, only patients with episodic migraine (EM) were included. Little is known on patterns of allodynia in chronic migraine (CM). ⋯ This suggests that central trigeminovascular neurons are chronically sensitized in patients experiencing migraine headache >15 days per month. The testing of BA in the clinical setting is possible using a simple and brief approach. It allows the clinician to determine whether the patient is sensitized, a diagnosis that affects treatment decisions.
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Comment Letter Case Reports
Migraine and fibromyalgia developing after a pontine haemorrhage.
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Randomized Controlled Trial Clinical Trial
Magnetic resonance angiography shows dilatation of the middle cerebral artery after infusion of glyceryl trinitrate in healthy volunteers.
Previous studies have reported dilatation of the middle cerebral artery (MCA) during acute glyceryl trinitrate (GTN)-induced headache, using imaging techniques such as transcranial Doppler (TCD), positron emission tomography (PET) and single photon emission computerized tomography (SPECT). In the present study we aimed to evaluate whether magnetic resonance angiography (MRA) may be used to examine the effect of GTN on the MCA, with respect to changes in diameter and cross-sectional area in healthy volunteers. In addition, we wanted to determine the intra- and inter-observer variation of the method. ⋯ The intra-observer variation (day-to-day) at baseline was 8.3% and 10.9% for the two observers. The mean inter-observer variation of the cross-sectional MCA area was 15.5% and for the diameter measurements 8%. The present study shows that the MRA method gives a reliable semi-quantitative index of the vascular changes in the intra-cerebral arteries after infusion of GTN and may be useful for headache research.
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Approximately 57 patients with red ear syndrome have been reported in the literature since it was initially described in 1994. The clinical phenotype therefore continues to be defined and no consistent treatment response has been described. We report three new cases of red ear syndrome and suggest that the disorder may exist as a primary trigeminal or cervical autonomic cephalalgia, coexist with other rare trigeminal autonomic cephalalgias, or may be secondary. The pathogenesis in these different circumstances may be distinct, the triggers specific and, when secondary, the disorder may be more resistant to treatment.
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The relationship between the changes in forward head posture (FHP), neck mobility and headache parameters was analysed in 25 patients with chronic tension-type headache (CTTH) undergoing a physical therapy programme. Side-view pictures were taken to measure the cranio-vertebral angle in the sitting and standing positions. A cervical goniometer was employed to measure the range of all cervical motions. ⋯ Changes in these outcomes throughout the study were not correlated either. FHP and neck mobility appear not to be related to headache intensity, duration or frequency in patients suffering from CTTH. Although patients showed a reduction in the range of motion in the neck, it is uncertain whether this is consistent with TTH.