Development of diagnostic criteria for Behçet's uveitis in a Chinese population.

The systemic features, including recurrent oral ulceration, multiform skin lesions and genital ulceration were weighted as 4 points, 3 points and 2 points, respectively.

Primary assessment was based on ocular features alone.

An ocular score ≥5 supported a BU diagnosis in patients without signs of granulomatous uveitis or evidence of sarcoidosis or syphilis.