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Warfarin for refractory chronic cluster headache: a randomized pilot study.

Sameh M Hakim1

  • 1Department of Anesthesiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt.

Headache
|March 15, 2011
PubMed
Summary
This summary is machine-generated.

Low-intensity warfarin therapy significantly increased remission rates in chronic cluster headache patients refractory to other treatments. This anticoagulation approach reduced headache frequency, duration, and intensity, improving patients' quality of life.

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Area of Science:

  • Neurology
  • Pharmacology

Background:

  • Cluster headache is a debilitating neurological disorder.
  • Pharmacological management often fails for chronic, refractory cases.
  • Limited evidence exists from randomized controlled trials on anticoagulants for cluster headache.

Purpose of the Study:

  • To evaluate the efficacy of low-intensity warfarin therapy in patients with chronic cluster headache.
  • To assess the impact of warfarin on headache remission and attack characteristics.

Main Methods:

  • A randomized, placebo-controlled, crossover trial was conducted.
  • Thirty-four patients with refractory chronic cluster headache received warfarin or placebo for 12 weeks.
  • Warfarin was dosed to achieve an international normalized ratio of 1.5–1.9.

Main Results:

  • Remission lasting ≥4 weeks occurred in 50% of patients on warfarin versus 11.8% on placebo (P=.004).
  • Warfarin treatment showed a hazard ratio of 5.26 for remission (P=.0003).
  • Warfarin significantly reduced headache frequency, duration, and intensity (P<.01).

Conclusions:

  • Low-intensity warfarin anticoagulation is effective in inducing remission in refractory chronic cluster headache.
  • Warfarin therapy significantly improves patient outcomes and reduces headache burden.
  • This study provides evidence for the use of anticoagulants in managing intractable cluster headaches.