Neurologists from Leiden University in the Netherlands have for the first time isolated a gene that is linked to some types of migraines.

The Inca used to treat headaches by drilling a hole in the skull. The French favored cold compresses. Today we use shelffuls of heavily advertised over-the-counter remedies: aspirin, Advil, Tylenol, Aleve. But how much do scientists really know about headaches and what causes them? Quite a bit, as doctors who…