Check out this answer from Consensus:
In medical terminology, “R/A” typically refers to “Rheumatoid Arthritis,” a condition characterized by chronic inflammation of the joints. This abbreviation is widely recognized in medical literature and practice.
In medical terminology, abbreviations and acronyms are commonly used to simplify communication. Understanding these abbreviations is crucial for accurate interpretation of medical records and literature. The abbreviation “R/A” is one such term that can have specific meanings depending on the context in which it is used.