Long-term outcomes of patients with medication-overuse headache
Author Information
Author(s): Hagen Knut, Albretsen Claus, Vilming Steinar T., Salvesen Rolf, Grønning Marit, Helde Grethe, Gravdahl Gøril, Zwart John-Anker, Stovner Lars Jacob
Primary Institution: Norwegian University of Science and Technology
Hypothesis
What is the long-term outcome for patients with medication-overuse headache after 4 years?
Conclusion
After 4 years, one-third of the patients had a significant reduction in headache frequency, and two-thirds were no longer overusing medication.
Supporting Evidence
- At follow-up, participants had a mean reduction of 6.5 headache days per month.
- 32% of participants were considered responders with a ≥50% reduction in headache frequency.
- Total Hospital Anxiety and Depression Scale score at baseline predicted being a responder after 4 years.
Takeaway
This study followed patients with headaches caused by too much medication and found that many of them felt better after 4 years.
Methodology
Patients were followed up after 4 years, with data collected through neurologist visits, telephone interviews, and medical records.
Potential Biases
Participants who did not respond may have had better outcomes, indicating a selection bias.
Limitations
The study may not be generalizable due to selective participation and potential recall bias.
Participant Demographics
Patients aged 22-64 years, with a mix of genders and various headache types.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI 3.7–4.2 years
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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