elizabeth loder, md, professor of neurology, harvard medical school; chief, division of headache, brigham & women's hospital. .
alleging abuse, family of blac chyna's ailing assistant plan to sue .
it's not clear how well they'll stack up against current migraine therapies, because head-to-head studies haven't been done. .
lawmakers should revisit that idea when lepage is no longer in office next year. . .