title: Unexplained acute backache in longstanding ankylosing spondylitis.
abstract: Patients with longstanding ankylosing spondylitis who develop untypical severe backache may have spinal lesions.
authors.forename: N
authors.initials: N
authors.lastname: Dunn
authors.forename: B
authors.initials: B
authors.lastname: Preston
authors.forename: K L
authors.initials: KL
authors.lastname: Jones
mesh_terms: D000208:Acute Disease; D000328:Adult; D001416:Back Pain / Q000209:etiology*; D005260:Female; D050723:Fractures, Bone / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013124:Spinal Injuries / Q000150:complications*; D013131:Spine / Q000000981:diagnostic imaging; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging