Which vascular change occurs during a migraine?

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Prepare for the West-MEC RMA-AMT Module 1 Exam. Use flashcards and multiple-choice questions with hints and detailed explanations to enhance your study experience. Gain confidence and be ready for your exam!

Multiple Choice

Which vascular change occurs during a migraine?

Explanation:
Migraines involve a two-phase change in the brain’s blood vessels. First, the vessels constrict, reducing blood flow. Then they dilate, increasing blood flow and creating the pulsating headache. This sequence explains why some people experience aura from the initial constriction and why the headache phase comes with vasodilation driven by trigeminal activation and releasing vasoactive substances like CGRP. So the best description is initial constriction followed by dilation.

Migraines involve a two-phase change in the brain’s blood vessels. First, the vessels constrict, reducing blood flow. Then they dilate, increasing blood flow and creating the pulsating headache. This sequence explains why some people experience aura from the initial constriction and why the headache phase comes with vasodilation driven by trigeminal activation and releasing vasoactive substances like CGRP. So the best description is initial constriction followed by dilation.

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