Behcet’s Diseases (BD) is a form of vasculitis that was first reported in 1937 by Behcet, a Turkish dermatologist, as a disease characterized by lesions of the mouth, eyes, and vulva. Afterwards, the disease was named after him, which is known as Behcet’s disease. This vasculitis is not caused by microbial infections such as bacteria, but is an aseptic inflammatory disease. It is well known that human blood vessels are spread throughout the body, and thus this vasculitis disease is also a systemic, multisystemic disease that can involve many organs such as the skin, mucous membranes, eyes, cardiovascular, gastrointestinal, urinary, joints, and nerves, causing diseases with eye, oral, and vulvar inflammation and ulcers as the main manifestations, collectively known as the oral, ocular, and genital triad. However, it is not a sexually transmitted disease and is not contagious. Expert tips: If you have eye lesions with mouth and vulva ulcers, you should be alert to leukoaraiosis, but its diagnosis must be done by an experienced specialist, and if necessary, you can go to the Department of Dermatology and Venereology to exclude venereal diseases before going to the Department of Rheumatology and Immunology for diagnosis.