January 12, 2011 — Up to 13% of healthy people test positive for antinuclear antibodies (ANA), which are associated with autoimmune disorders such as rheumatoid arthritis, Sjögren's syndrome, or ...
Autoimmune rheumatic diseases (ARDs) represent a diverse group of conditions in which the immune system mistakenly targets the body’s own tissues, often affecting the musculoskeletal system and ...