title: Chronic paroxysmal hemicrania (CPH): nomenclature as far as the various stages are concerned.
authors.forename: O
authors.initials: O
authors.lastname: Sjaastad
mesh_terms: D002908:Chronic Disease; D003027:Cluster Headache / Q000503:physiopathology; D006801:Humans; D008881:Migraine Disorders / Q000145:classification / Q000503:physiopathology*; D009626:Terminology as Topic