In ancient Greece, the best-known remedy for a long-standing headache was to drill a small hole in the skull to drain supposedly infected blood. Fortunately, doctors today don't resort to power tools to cure headaches, but we still have a lot to learn about this ancient ailment. Dan Kwartler shares what we know (and don't know) about headaches. [Directed by Sharon Colman, narrated by Addison Anderson, music by Miguel d'Oliveira].

Dan Kwartler: What causes headaches?

What causes headaches?

Ancient trepanation traded headaches for more permanent conditions, a stark contrast to our evolving understanding today.

Headaches, an ancient ailment, are classified into primary and secondary, revealing diverse causes and complexities in treatment.

Investigations into primary headaches like migraines and cluster headaches push science towards unraveling the brain's mysteries.