For generations, migraine has been diagnosed through the patient's own words — a description of pain, light, and nausea that no blood test could confirm or deny. Now, Norwegian researchers working with artificial intelligence and genetic data from more than 43,000 people have found that migraine may not be a single condition at all, but a spectrum of distinct biological realities that leave measurable traces in the body long before any headache arrives. The discovery, emerging from a large population study spanning decades, challenges medicine to move beyond listening and toward a new kind of