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  • Title: Exacerbation of headache during dihydroergotamine for chronic migraine does not alter outcome.
    Author: Eller M, Gelfand AA, Riggins NY, Shiboski S, Schankin C, Goadsby PJ.
    Journal: Neurology; 2016 Mar 01; 86(9):856-9. PubMed ID: 26843569.
    Abstract:
    OBJECTIVE: To evaluate whether headache exacerbation associated with IV dihydroergotamine (DHE) infusion predicts medium-term headache outcome in patients with chronic migraine. METHODS: This was a retrospective chart review study of the UCSF Headache Center's use of IV DHE for chronic migraine from 2008 to 2012. Medium-term headache outcome was assessed at 6-week follow-up. Univariate and multivariate logistic regression models were used to assess for predictors of outcome. RESULTS: Patients with chronic migraine (n = 274) were treated with a course of IV DHE. Of 214 with 6-week follow-up, 78% had medium-term headache benefit. In a univariate logistic regression model, headache exacerbation with DHE was associated with lower odds of a positive medium-term headache outcome (odds ratio [OR] 0.43, 95% confidence interval [CI] 0.20-0.91). However, in the multivariate logistic regression model, headache exacerbation was no longer an independent predictor of treatment outcome (OR 0.65, 95% CI 0.28-1.51). Factors that independently predicted outcome were nausea (OR 0.12, 95% CI 0.02-1.00, p = 0.05), age (OR 1.68 for each decade increase in age, 95% CI 1.24-2.28), and medication overuse (OR 0.42, 95% CI 0.18-0.97). CONCLUSIONS: After controlling for nausea and other factors, headache exacerbation with DHE infusions is not an independent predictor of poor headache outcome and clinicians should not interpret its presence as a reason to stop treatment. The focus of management should be on controlling nausea as it is the most important modifiable factor in achieving a good headache outcome with an inpatient course of IV DHE for chronic migraine.
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