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Clinical course of ocular Behçet's disease in siblings
S Onal1, I Tugal-Tutkun, M Urgancioglu
1Department of Ophthalmology, Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Purpose:
Familial occurrence has been reported in approximately 8% of Turkish patients with Behçet's disease. Our aim was to compare the clinical course of ocular Behçet's disease among siblings.
Methods:
We retrospectively studied five pairs of siblings with ocular involvement of Behçet's disease. No other family member of these siblings had any symptom of Behçet's disease.
Results:
The siblings comprised three sister-brother pairs, one sister-sister pair, and one brother-brother pair. There was a 5-10-year difference between the age at onset of ocular disease among siblings. Three of the five pairs (two sister-brother, one brother-brother) had a dissimilar course of disease activity. Female siblings had an earlier age at onset and tended to have a worse prognosis than their brothers.
Conclusions:
It is generally acknowledged that male sex is associated with a worse prognosis. In this study, however, we observed that, among siblings with a dissimilar course, female patients were more severely affected than male patients. Poor ocular prognosis in a patient does not indicate aggressive treatment in his/her sibling. We believe that each sibling should be managed on an individual basis.