The aim of this study was to compare the effectiveness of strong advice to withdraw the overused medication with the effectiveness of two structured pharmacological detoxification strategies in a cohort of patients diagnosed with probable migraine overuse headache (MOH) plus migraine and presenting low medical needs. One hundred and twenty patients participated in the study. Exclusion criteria included: previous detoxification treatments, coexistent medical or psychiatric illnesses and overuse of agents containing opioids, benzodiazepines and barbiturates. Group A received only intensive advice to withdraw the overused medication. Group B underwent a standard out-patient detoxification programme (advice+prednisone+preventive treatment). Group C underwent a standard in-patient withdrawal programme (as in group B + fluid replacement and antiemetics). Withdrawal therapy was considered successful if, after 2 months, the patient had reverted to an episodic pattern of headache and to an intake of symptomatic medication on fewer than 10 days/month. We were able to detoxify 75.4% of the whole cohort, 77.5% of patients in group A, 71.7% of patients in group B and 76.9% of those in group C (P>0.05). In patients with migraine plus MOH and low medical needs, effective drug withdrawal may be obtained through the imparting of advice alone.
The aim of this study was to evaluate the rates and predictors of relapse, after successful drug withdrawal, in migraine patients with medication overuse headache (MOH) and low medical needs. The study population, study design, inclusion criteria and short-term effectiveness of the medication withdrawal strategies have been described elsewhere (Rossi et al., Cephalalgia 2006; 26:1097). Relapsers were defined as those patients fulfilling, at follow-up, the new International Classification of Headache Disorders, 2nd edn, appendix criteria for MOH. Complete datasets were available for 83 patients. At 1 year's follow up, the relapse rate was 20.5%. Univariate analysis showed that patients who relapsed had a longer duration of migraine with more than eight headache days/month, a longer duration of drug overuse, had tried a greater number of preventive treatments in the past, had a lower reduction of headache frequency after withdrawal, and had previously consulted a greater number of specialists. Binary logistic regression analysis was performed, and three variables emerged as significant predictors of relapse: duration of migraine with more than eight headache days/month [odds ratio (OR) 1.57, P = 0.01], a higher frequency of migraine after drug withdrawal (OR 1.48, P = 0.04) and a greater number of previous preventive treatments (OR 1.54, P = 0.01). In patients with migraine plus MOH and low medical needs, relapse seems to depend on a greater severity of baseline migraine.
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