osteogenesis imperfecta (oi) is a genetic disorder characterized by bones that break easily, often from little or no apparent cause. in this article, we present a patient suffering from oi, who had concomitant active beh ç et’s disease(bd)with repeated oro-genital ulcers, skin postular eruptions and severe recurrent bilateral uveitis. this patient, is, to our knowledge the first reported case i...