The "periodical head-achs" of Thomas Jefferson.
D003937:Diagnosis, Differential; D005197:Famous Persons; D006261:Headache / Q000175:diagnosis / Q000209:etiology / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D008881:Migraine Disorders / Q000175:diagnosis / Q000266:history