AUTHOR=Tassorelli Cristina TITLE=The Grand Challenge in Cranial Pain—From Migraine to Cranial Neuralgias: Understanding Differences and Similarities to Advance Knowledge and Management JOURNAL=Frontiers in Neurology VOLUME=8 YEAR=2017 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2017.00019 DOI=10.3389/fneur.2017.00019 ISSN=1664-2295