Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Behcet's disease ?
    ### Response:
    Behcet's disease is a chronic multisystem inflammatory disorder characterized by ulcers affecting the mouth and genitals, various skin lesions, and abnormalities affecting the eyes. In some people, the disease also results in arthritis (swollen, painful, stiff joints), skin problems, and inflammation of the digestive tract, brain, and spinal cord.
    