- A new study found that migraine may be associated with structural changes in the brain
- Experts said there is no cause for concern about long-term cognitive changes
This story was originally published on CNN.com in 2013.
(CNN)About 37 million Americans suffer from migraines, those incredibly painful and often debilitating headaches. Though they've been known to knock a person out, migraines weren't thought to permanently affect the brain -- until now. A study published Wednesday in the journal Neurology suggests that migraines may indeed leave a mark.