• Özlem Önder, Rıfat Reha Bilgin, Aslı Köşkderelioğlu, and Muhteşem Gedizlioğlu.
• Clinic of Neurology, İzmir Bozyaka Training and Research Hospital, İzmir, Turkey.
• Noropsikiyatri Ars. 2016 Jun 1; 53 (2): 173-177.

AbstractOrbital myositis (OM) is an inflammatory disorder of the extraocular muscles. The signs and symptoms of OM are periorbital pain, eyelid swelling and redness, restricted ocular motility, and strabismus. There are at least two major forms, described by Benedikt GH Schoser, a limited oligosymptomatic ocular myositis (LOOM), which is associated with conjunctival injection only, and severe exophthalmic ocular myositis (SEOM), which presents with additional ptosis, chemosis, and proptosis. We report the clinical and radiological features of five patients with OM who were recently followed in our clinic. Three patients, one man and two women, were placed in the LOOM group, and the other two patients, both women, were in the SEOM group. In both groups, the initial complaints were pain worsening with eye movements and double vision, with only one patient in the SEOM group having pain worsening secondary to Crohn's disease. The most affected muscles were the medial and lateral recti. All the patients were treated with corticosteroids, resulting in rapid improvement. Only one patient in the SEOM group experienced a relapse. Orbital magnetic resonance imaging of all the patients revealed enlargement and contrast enhancement of the involved muscles. Although clinical and radiological features are quite consistent, delayed diagnosis in some patients demonstrates the importance of the awareness of OM.

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