Hi!
greetings from health care magic
to confirm wheather it is
rheumatoid arthritis or any other arthritis you have to do some blood test like RA factor,
C-reactive protein, ASO titre,. If RA factor,
CRP is reactive then she may have Rhematoid arthritis. If she is having pain with fever and ASO titre is positive above 200 and past history of repeted tonsilar infection then it could be rheumatic arthritis. if all the tests are negative and the xray show degenaration of cartilages then may be a case of
osteoarthritis. again all the test if negative and nothing any major abnormality in xray then could be sero negative arthritis. If she was having psoiriasis or presently having then could be psoriatic arthritis. Thank you