ArticleBMJ case reports2019
Ankylosing spondylitis presenting with enthesitis at an uncommon site and fever of unknown origin.
Article in BMJ case reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 7 citations in OpenAlex.
- Diagnostic and therapeutic challenges in a patient with coexisting ankylosing spondylitis and Löfgren's syndrome: A case report.The Journal of international medical research · 2026Review
- Late onset axial spondyloarthritis presenting with fever of unknown origin. A case-based review.Rheumatology international · 2026Article
- Multilevel spinal fractures in ankylosing spondylitis: illustrative case.Journal of neurosurgery. Case lessons · 2025Article
- Axial spondyloarthritis in patients with recurrent fever attacks: data from the AIDA network registry for undifferentiated autoInflammatory diseases (USAIDs).Frontiers in medicine · 2023Article
- T2 mapping and fat quantification of lumbar paraspinal muscle in ankylosing spondylitis: a case control study.BMC musculoskeletal disorders · 2022Article
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Authors and funding
4 authors at 3 institutions in 1 country.
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Abstract
A 58-year-old man presented with a 2-month history of arthralgia and bilateral temporal region pain, and a 1-month history of fever. He had had refractory neck pain since his 20s. Reduced cervical and lumbar mobility was observed. Radiographs of cervical and thoracic vertebrae disclosed syndesmophytes. Pelvic radiographs showed sclerosis in the right sacroiliac joint and ankylosis in the left sacroiliac joint. MRI with contrast enhancement showed enthesitis in the upper extremities and enhancement in the bilateral temporal muscle, which indicated enthesitis of temporal muscle. He was diagnosed with ankylosing spondylitis based on the limitation in mobility of the lumbar spine and radiographic findings. To the best of our knowledge, this is the first report describing enthesitis of the temporal muscle. This case highlights that ankylosing spondylitis can be accompanied with enthesitis at the temporal muscle and fever of unknown origin at the initial presentation.
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