title: A wolf in sheep's clothing.
authors.affiliation: Department of Neurology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Robert
authors.initials: R
authors.lastname: Lewis
authors.affiliation: Department of Neurology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Thomas
authors.initials: T
authors.lastname: Jenkins
authors.affiliation: Department of Pathology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Stephen
authors.initials: S
authors.lastname: Wharton
authors.affiliation: Department of Radiology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Eleanor
authors.initials: E
authors.lastname: Lorenz
authors.affiliation: Department of Neurophysiology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Ganesh
authors.initials: G
authors.lastname: Rao
authors.affiliation: Department of Rheumatology, Doncaster and Bassetlaw Hospitals, Doncaster, UK.
authors.forename: Robert
authors.initials: R
authors.lastname: Stevens
authors.affiliation: Department of Neurology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Marios
authors.initials: M
authors.lastname: Hadjivassiliou
authors.affiliation: Department of Neurology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.
authors.forename: Daniel
authors.initials: D
authors.lastname: Blackburn
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D010488:Polyarteritis Nodosa / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology
keywords: MYOPATHY; VASCULITIS