Recurrent orbital myositis - Report of a familial incidence

Background: In orbital myositis, painful diplopia develops owing to an enla rgement of the extraocular muscles. Diagnosis is established based on histo ry, clinical manifestations, and therapeutic response to steroids, with the findings of magnetic resonance imaging providing additional information. Observation: We observed a family in which 4 members had an ophthalmopathy suggestive of orbital myositis. The affected members are a sibling pair (fe male and male) and 2 children of the brothers of their father's father. Conclusion: The familial incidence suggests a potential genetic predisposit ion in the development of orbital myositis.