Cephalalgia : an international journal of headache
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Sweating function and retinal arterial reactivity in patients with migraine were examined during headache-free intervals. The sweat glands were stimulated by intradermal injection of pilocarpine hydrochloride, and molds of sweat droplets were obtained using Silastic. ⋯ The retinal vasomotor index (-change in retinal arterial diameter (%)/change in effective MABP (mmHg)) was significantly lower in classic and in common migraine than in controls. The above results suggest that sweating function and retinal arterial reactivity are impaired in patients with migraine and that the impairment may play an important role in the pathophysiology of migraine attacks.
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The purpose of this investigation was to evaluate whether the pain of cervicogenic headache could be due to referred symptoms from myofascial trigger points. The presence or absence of cervical spine dysfunction was also of interest. Eleven patients with cervicogenic headaches were systematically examined for myofascial trigger points and cervical spine dysfunction. ⋯ It is concluded that myofascial trigger points may be an important pain producing mechanism in cervicogenic headache and that segmental cervical dysfunction is a common feature in such patients. Conservative, non-surgical treatment appears to be effective in reducing the frequency and intensity of cervicogenic headache. These data suggest that surgical approaches should be reserved only for those patients who fail conservative therapy.