This is an immediate type allergy mediated by IgE antibodies and mast cells. It is responsible for allergic reactions like anaphylaxis, allergic asthma, and hay fever, and it is not associated with Behcet's disease.

This is a cytotoxic type reaction mediated by IgG and IgM antibodies directed against cells or tissues, leading to lysis or damage. It is seen in diseases like autoimmune hemolytic anemia and Goodpasture syndrome, not Behcet's disease.

This involves the formation of immune complexes (aggregations of antigens, complement proteins, and IgG or IgM antibodies) that get deposited in tissues, triggering inflammation. It features in diseases like systemic lupus erythematosus and post-streptococcal glomerulonephritis – not Behcet's disease.

Type IV hypersensitivity, also known as cell-mediated or delayed-type hypersensitivity, is implicated in the pathology of Behcet's disease. This immune response is mediated by T cells and does not involve antibodies. It is often associated with non-caseating granulomatous inflammation found in diseases like tuberculosis, leprosy, and sarcoidosis, as well as Behcet's disease.