[Arthritis, erythema nodosum and genital ulcerations. Behçet disease].

Behcet's disease is a disease of unknown etiology resting in between vasculitis, spondyloarthropathy and autoinflammatory diseases. If his predilection for the population originating from the Silk Road is well known, as are its cutaneous, ocular and vascular manifestations, this case illustrates the non-specificity of those manifestations, the diagnostic difficulties and the importance of routinely assessing for eyes and bowel diseases in this type of patient.