In this study, the efficacy of Naproxen sodium (Nxs) in the prophylaxis of Menstrual Migraine (MM) was tested, versus Placebo (PL). Forty women suffering from MM were admitted to a double-blind treatment protocol with Nxs 550 mg twice each day by mouth or Placebo (PL), for 3 months; in the next 3 months all the women were treated with the active drug in an open study. The headache intensity and duration, as well as the number of days of headache and the analgesic consumption, were significantly reduced with Nxs compared to PL. The efficacy of Nxs, shown also in improving premenstrual pain, and its good tolerability, support the use of this drug in the prophylactic therapy of MM.
To investigate the comorbidity of premenstrual syndrome (PMS) and menstrual migraine, the Menstrual Distress Questionnaire (MDQ) was prospectively administered for two consecutive menstrual cycles to 22 patients with menstrual migraine, 12 cases with migraine without aura and 15 patients with PMS. MDQ scores varied throughout the menstrual cycle in each patient group, the wider changes being shown by patients with PMS. Fourteen menstrual migraine patients and 4 migraine without aura patients achieved diagnostic criteria for PMS over two menstrual cycles. In these patients MDQ scores did not differ from PMS sufferers at any stage of the menstrual cycle. The premenstrual increase of each cluster of PMS symptoms was identical in menstrual migraine and PMS subjects with the exception of negative affect. We suggest that PMS symptoms should be taken into account in the IHS diagnostic criteria for menstrual migraine.
In order to understand the possible 5-hydroxytryptamine (5HT) anomalies in migraine, particularly in the period before the headache attack, we compared the levels of 5HT, its stable metabolite 5-hydroxyindoleacetic acid (5HIAA) and platelet monoaminoxidase (MAO) activity in patients with menstrual migraine with those of healthy female controls. In every subject, blood samples were drawn during both follicular and late luteal phases of the menstrual cycle. In controls, platelet 5HT levels remained stable, whereas 5HIAA levels and MAO activity were higher in the luteal than in the follicular phase, suggesting an increased catabolism of 5HT which occurs physiologically just before menses. In menstrual migraine 5HIAA levels and MAO activity showed similar changes with higher values in the luteal than in the follicular phase. The luteal phase values were significantly higher than those of controls. Also, and in contrast to controls, 5HT levels decreased in the luteal phase. These data suggest that 5HT availability is reduced in menstrual migraine, possibly due to an increased catabolism and/or to a reduced synthesis, and hence predisposes patients to migraine attacks.
To assess the function of the hypothalamus-pituitary-adrenal axis in patients with severe premenstrual syndrome (PMS) 28 patients and 14 asymptomatic controls were studied during the mid-to late-luteal phase of the menstrual cycle. The response of plasma cortisol to both high-dose naloxone and corticotropinreleasing hormone (CRH) was assessed. Naloxone stimulated a significant cortisol release in controls whereas it was otherwise almost absent in patients. CRH stimulated a greater release of cortisol in patients than in controls. Fifteen patients met criteria for either current anxiety and/or mood disorders. The cortisol secretion after both naloxone and CRH stimulations was similar for PMS patients with or without psychiatric disorders. These data indicate that endogenous opioids modulate the activity of the hypothalamus-pituitary-adrenal axis. Irrespective of the concomitant presence of menstrual migraine or psychiatric disorder, such control is altered in patients with severe PMS because of the possible hyposensitivity of opiate receptors. The hyperresponsiveness to CRH may be the consequence of the reduced inhibition that endogenous opioids tonically exert on HPA axis.
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