autoimmune disorder
Medical term for conditions where the immune system attacks the body's own tissues.
Immunosuppressants are sometimes used to treat autoimmune disorders.
Synonymous; 自己免疫不全 is less common and may emphasize deficiency or failure of immune regulation.
Compound of 自己 (self), 免疫 (immunity), and 不全 (insufficiency/failure). The exact historical derivation is uncertain; it is a modern medical term.