An estimated 36 million Americans suffer from migraines. If you're one of them, chances are that once the pain hits, you avoid bright light.
New research gives some reasons for that response. We look at a paper published in the Proceedings of the National Academy of Sciences that examined migraine patients and found that aversion to light might not just be a symptom of a migraine, but also a possible contributing factor to the migraine.
This segment aired on June 26, 2017.