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Related Experiment Videos

Arterial responses during migraine headache.

H K Iversen1, T H Nielsen, J Olesen

  • 1Department of Neurology, Gentofte Hospital, Hellerup, Denmark.

Lancet (London, England)
|October 6, 1990
PubMed
Summary

During migraine attacks, the superficial temporal artery widens on the painful side, unlike other arteries. This suggests cephalic arteries may contribute to migraine pain.

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Area of Science:

  • Neurology
  • Vascular Biology

Background:

  • The superficial temporal artery is implicated in migraine pain, but its diameter changes during attacks remain unmeasured.
  • Previous assumptions about migraine pain mechanisms lack direct vascular evidence.

Purpose of the Study:

  • To directly measure the diameter of the superficial temporal artery during migraine attacks.
  • To investigate the role of cephalic artery diameter changes in migraine pathogenesis.

Main Methods:

  • Utilized high-resolution ultrasound to measure superficial temporal artery diameter in 25 migraine patients.
  • Compared arterial diameters on the painful versus non-painful sides during attacks.
  • Measured radial artery diameters for comparison.

Main Results:

  • Superficial temporal artery lumen was significantly wider on the painful side during migraine attacks.
  • Radial arteries and the non-painful superficial temporal artery showed vasoconstriction during attacks.
  • The affected superficial temporal artery did not exhibit generalized vasoconstriction, indicating a localized vasodilation.

Conclusions:

  • Findings suggest a localized vasodilatory response in the superficial temporal artery during migraine attacks.
  • Cephalic arteries, specifically the superficial temporal artery, may play a direct role in migraine pathogenesis.
  • Direct measurement of arterial diameter provides new insights into migraine vascular mechanisms.

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