a disordered immune system causes autoimmune diseases
autoimmune_disease is illness. rheumatic_fever is autoimmune_disease. myasthenia_gravis is autoimmune_disease. ankylosing_spondylitis is autoimmune_disease. autoimmune_disease is disease. type_i_diabetes is autoimmune_disease. rheumatoid_arthritis is autoimmune_disease. autoimmunity is disease. immune_deficiency_disorder is disease.