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White Spots on Brain MRI: What They Mean

Understand white spots on brain MRI: T2/FLAIR white matter hyperintensities, migraine spots, small vessel disease, MS patterns, risk factors, and follow-up.

CT Read Editorial11 min readPublished 2026-05-05

Reviewed by a board-certified radiologist

White Spots on Brain MRI: What They Mean medical imaging guide cover
Radiologist reviewing brain MRI images in an imaging reading room
Synthetic editorial illustration for patient education. Not a real patient study or diagnosis.

Before You Read

Use this article as a plain-language guide, not a diagnosis

This guide explains common imaging terms, patterns, and follow-up questions so you can better understand your radiology report. Always confirm important findings with your radiologist or treating clinician.

What are White Spots on Brain MRI?

Seeing terms like "T2/FLAIR hyperintensities" or "white matter hyperintensities" in a brain MRI report can be scary. These appear as white spots on the image and indicate subtle water content changes in the brain tissue.

Common Causes

  • Cerebral Small Vessel Disease (CSVD): The most common cause, linked to aging, hypertension, and high cholesterol.
  • Migraines: Chronic migraine sufferers often have benign white spots on their brain MRI.
  • Multiple Sclerosis (MS): A demyelinating disease where white spots cluster in specific white matter pathways.
  • Gliosis: Scar tissue left behind from previous micro-injuries in the brain.

Frequently asked questions

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