title: Headache and spontaneous glabellar ecchymosis: more than a self-injury behavior?
authors.affiliation: Department of Neurology, University of Istanbul-Medipol, Istanbul, Turkey. burakyulug@gmail.com.
authors.forename: Burak
authors.initials: B
authors.lastname: Yulug
authors.forename: Lütfü
authors.initials: L
authors.lastname: Hanoglu
authors.forename: Wolf Rüdiger
authors.initials: WR
authors.lastname: Schabitz
mesh_terms: D000328:Adult; D003027:Cluster Headache / Q000503:physiopathology*; D004438:Ecchymosis / Q000209:etiology*; D005546:Forehead / Q000473:pathology; D006801:Humans; D008297:Male; D016728:Self-Injurious Behavior