title: An unusual cause of chronic headaches: question.
authors.affiliation: Boston University School of Medicine, Department of Neurology, Boston, MA, USA.
authors.forename: José Rafael P
authors.initials: JR
authors.lastname: Zuzuárregui
authors.forename: Jessica
authors.initials: J
authors.lastname: Lin
authors.forename: James A
authors.initials: JA
authors.lastname: Otis
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000473:pathology; D001706:Biopsy; D003937:Diagnosis, Differential; D004388:Dura Mater / Q000473:pathology*; D020773:Headache Disorders / Q000209:etiology*; D006801:Humans; D007150:Immunohistochemistry; D019585:Intracranial Hypotension / Q000175:diagnosis; D008279:Magnetic Resonance Imaging; D008297:Male; D055756:Meningeal Carcinomatosis / Q000175:diagnosis; D008581:Meningitis / Q000150:complications* / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D008875:Middle Aged; D009336:Necrosis / Q000150:complications / Q000175:diagnosis; D010291:Paresis / Q000209:etiology; D012021:Reflex, Abnormal; D012507:Sarcoidosis / Q000175:diagnosis; D013129:Spinal Puncture; D014390:Tuberculosis, Meningeal / Q000175:diagnosis