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OBJECTIVE The medullary R2 response of the blink reflex can be elicited by innocuous and noxious stimuli. The purpose of this study was to elicit a nociception specific R2 response with a new surface electrode. METHODS In 10 healthy subjects the blink reflex was elicited using a standard (10-15 mA) and a new concentric surface electrode type (0.6-1.6 mA)(More)
OBJECTIVE To investigate trigeminal sensory processing in patients with migraine using a novel "nociception-specific" blink reflex. METHODS Seventeen patients with unilateral migraine headache were studied within 6 hours of onset. Blink reflexes were elicited with a standard stimulating electrode (standard blink reflex) and concentric stimulating(More)
The authors followed 532 consecutive patients with episodic migraine (<15 days/month) for 1 year. Sixty-four patients (14%) developed chronic headache (>/=15 days/month). The odds ratios for developing CH were 20.1 (95% CI 5.7 to 71.5) comparing patients with a "critical" (10 to 14 days/month) vs "low" (0 to 4 days/month) and 6.2 (95% CI 1.7 to 26.6) in(More)
We studied the habituation of the 'nociceptive' blink reflex (nBR) in 15 healthy subjects and 17 migraine patients interictally as well as during unilateral migraine headache within six hours of onset and after treatment. In healthy volunteers the mean regression coefficient (MRC) was - 3.9 following right sided and - 4.9 left sided stimulation. This equals(More)
OBJECTIVE To investigate pharmacologic features such as mean critical duration until onset of medication-overuse headache (MOH) (MCDO), mean critical monthly intake frequencies (MCMIF), and mean critical monthly dosages (MCMD) as well as specific clinical features of MOH after overuse of different acute headache drugs, with a focus on newly approved(More)
The G1246A polymorphism in the gene of the hypocretin receptor 2 (HCRTR2) has been linked to the risk for cluster headache (CH). The authors examined this association in a large sample of 226 patients with CH and 266 controls from Germany. The genotype and allele distribution varied significantly between patients and controls. Homozygous carriers of the(More)
OBJECTIVE To compare almotriptan and zolmitriptan in the treatment of acute migraine. METHODS This multicentre, double-blind trial randomized adult migraineurs to almotriptan 12.5 mg (n = 532) or zolmitriptan 2.5 mg (n = 530) for the treatment of a single migraine attack. The primary end point was sustained pain free plus no adverse events (SNAE); other(More)
Allodynia--perception of pain from non-noxious stimuli--is a common clinical feature in various pain syndromes. The significance for migraine has increasingly been recognized and the pathophysiology has been investigated in detail. Allodynia is a marker for sensitization of central trigeminal neurons. Intensity and persistence of allodynic symptoms are a(More)
BACKGROUND Trigeminal neuralgia (TN) usually leads to paroxysms of short lasting but very severe pain. Between the attacks the patient is usually asymptomatic, but a constant dull background pain may persist in some cases. The mechanisms associated with the development of this chronic pain are not well understood. OBJECTIVE To determine trigeminal(More)
BACKGROUND Although up to 15% of patients with whiplash injury develop chronic headache, the basis and mechanisms of this posttraumatic headache are not well understood. METHODS Thirty-two patients with posttraumatic headache following whiplash injury were investigated within 14 days after the accident and again after 3 months using magnetic(More)