From 1 January 2004 to 31 December 2006 64 individuals with probable medication overuse headache were included in a randomized, 1-year open-labeled, multicentre study to evaluate the effect of early introduction of prophylactic treatment compared to abrupt withdrawal and with a control group (ClinicalTrials.gov number NCT00159588). In this follow-up, randomized patients still alive 4 years after primary inclusion time will be invited to a follow up interview, evaluating the headache complaints and the proportion of recurrent medication overuse.
The participants will be interviewed by telephone or consult the study doctor completing a headache diary for at least 1 month before attending the visit.
Study Type
OBSERVATIONAL
Enrollment
60
No new specific intervention
Norwegian National headache Centre, NTNU
Trondheim, Norway
Change in Headache Days/Month After 4 Years Compared to Baseline
Change in headache days/month after 4 years compared to baseline
Time frame: Baseline and after 4 years
Change of Medication Days/Month Compared to Baseline
Time frame: Baseline and after 4 years' of follow-up
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