Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleHeadache Caused by a Single Lesion of Multiple Sclerosis in the Periaqueductal Gray Area.AuthorsHaas, David C.; Kent, Paul F.; Friedman, Deborah I.PublicationHeadache: The Journal of Head & Face Pain, 1993, Vol 33, Issue 8, p452ISSN0017-8748Publication typeArticleDOI10.1111/j.1526-4610.1993.hed3308452.x