Behcet's Disease (BD) is one of the most-studied systemic disorders characterized by an occlusive vasculopathy of multiple organs. The etiology and pathogenesis of BD are still unclear, but there is evidence for genetic, immunologic and infectious factors in the onset and throughout the course of the disease. Immunology of Behcet's Disease highlights various aspects of BD. After an epidemiological overview, the clinical presentation of ocular and non-ocular symptoms of BD are summarized. The immunopathological changes reflect a chronic vasculitis of arterioles, venules and...