Nomenclature
There are many different types of childhood arthritis, and the causes tend to be obscure but this form involves multiple joints and the patient tests +ve for 'rheumatoid factor'.
JRA is an abbreviation of 'juvenile rheumatoid arthritis'.
There are many different types of childhood arthritis, and the causes tend to be obscure but this form involves multiple joints and the patient tests +ve for 'rheumatoid factor'.