Interleukin-33 can lead to blood–brain barrier dysfunction, mediating the intrathecal production of immunoglobulins in myelin oligodendrocyte glycoprotein antibody disease and aquaporin-4 neuromyelitis optica spectrum disorder. Interleukin-33 is correlated with central nervous system demyelinating diseases. The autoimmune conditions of the central nervous system (CNS) include myelin oligodendrocyte glycoprotein antibody disease (MOGAD) and neuromyelitis optica spectrum disorder...