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Cyclical orbital eosinophilic myositis
  1. Mahiul M K Muqit,
  2. Robert H Taylor
  1. Department of Ophthalmology, York Hospital, York, UK
  1. Dr Mahiul M K Muqit, Department of Ophthalmology, York Hospital NHS Trust, Wigginton Road, York YO31 8HE, UK; mmmk3{at}aol.com

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Eosinophilic myositis is a rare inflammatory condition of skeletal muscle associated with peripheral eosinophilia.1 Orbital eosinophilic angiocentric fibrosis2 and idiopathic orbital myositis3 have been reported. We report the first case of cyclical orbital eosinophilic myositis (OEM).

Case report

A 38-year-old woman presented to the ocular motility service in January 2006 with a one-week history of left-sided ptosis and diplopia. In the past four years, she had reported alternating ptosis and retro-ocular pain that recurred at six-week intervals. She was systemically well. Cranial computed tomography, magnetic resonance imaging, tensilon testing, neurophysiology and anti-acetylcholine receptor antibody had been normal.

Ocular examination revealed left partial ptosis, left hypotropia (20 prism dioptres (PD)) …

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