| Summary: | <h4>Objective</h4>An association between uveitis and multiple sclerosis (MS) is well-established, but the actual nature of that association remains poorly understood. We sought to determine the association between the presence of a uveitis diagnosis prior to an MS diagnosis compared to no pre-existing uveitis diagnosis in MS patients.<h4>Methods</h4>Patients in whom the presentation of uveitis preceded the presentation of MS (study group) and patients with MS and no uveitis (control group) were randomly selected at a ratio of 1:3 from the Sheba Multiple Sclerosis Center computerized database.<h4>Results</h4>Eleven patients presented with uveitis prior to MS diagnosis (study group), and 31 randomly selected patients had MS without uveitis (control group). Only one patient in the study group deteriorated to EDSS 3 during the follow-up period, compared to 15 patients in the control group (9.1% vs 48.4%, P = 0.049). None of the patients in the study group reached EDSS 6 during the 10 years of follow-up compared to 6 (19.4%) patients in the control group (P = 0.194).<h4>Conclusions</h4>MS patients who presented with uveitis that preceded their neurological symptoms of MS demonstrated a clinically significant better neurological prognosis, than our MS patients with no uveitis.
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