title: AJR teaching file: acute onset headache.
authors: Department of Radiology, B-115, Emory University School of Medicine, 1364 Clifton Rd. NE, Atlanta, GA 30322, USA.
authors: Ashok
authors: A
authors: Jayashankar
authors: Stephen M
authors: SM
authors: Sabourin
authors: Mark E
authors: ME
authors: Mullins
mesh_terms: D000208:Acute Disease; D001932:Brain Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000556:secondary*; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D006261:Headache / Q000209:etiology*; D006406:Hematoma / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D020300:Intracranial Hemorrhages / Q000175:diagnosis / Q000209:etiology; D008297:Male; D008545:Melanoma / Q000150:complications / Q000175:diagnosis* / Q000556:secondary*; D008875:Middle Aged