Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for:
Arrange prompt medical advice for a new hot, very swollen joint, especially with fever, because a joint infection must be considered.
Also contact the care team promptly for fever or other signs of infection while taking immune-suppressing medicine, unexplained bruising, yellow skin or eyes, a new widespread rash, or worsening shortness of breath.
Rheumatoid arthritis usually requires continuing follow-up.
Visits may be more frequent when treatment begins or changes.
A clinician may assess swollen and tender joints, pain, stiffness, fatigue, physical function, blood results, medication side effects, and progress toward low disease activity or remission.
Keep scheduled blood tests and tell the care team about new medicines, supplements, infections, pregnancy plans, or planned surgery.
Do not stop a DMARD or steroid without medical advice.
Report persistent symptoms or possible side effects rather than waiting for the next routine visit.
Routine concerns such as gradual changes in stiffness, fatigue, or day-to-day function can usually be discussed at a scheduled visit or through the clinician’s usual advice service.
Every sign above is quoted from the sofidex article on Rheumatoid arthritis. If you are not sure, err upward — it is always reasonable to be checked.