In medical terminology, "R/A" typically stands for "Rheumatoid Arthritis."
Rheumatoid arthritis is an autoimmune disease that primarily affects the joints, causing inflammation, pain, and potentially joint damage and deformities. It is different from osteoarthritis, which is a degenerative joint disease caused by wear and tear over time.
If you come across "R/A" in a medical context, it is essential to consider the context to confirm that it indeed refers to rheumatoid arthritis, as medical abbreviations can sometimes have multiple meanings. If there is any uncertainty, it is always best to consult with a medical professional for clarification.