What is rheumatoid arthritis?
Rheumatoid arthritis (RA) is an autoimmune condition where the immune system attacks the lining of your joints, causing pain, swelling and stiffness — usually symmetrical (both hands, both feet). Early treatment with DMARDs (disease-modifying drugs) within 3 months of symptoms starting can prevent joint damage. It affects about 400,000 adults in the UK.
Last updated 2026-07-01. This is general information, not a substitute for personalised medical advice.
Frequently asked questions
Is rheumatoid arthritis a disability?
It can qualify as a disability under the Equality Act 2010 if it substantially affects daily activities. Many people with RA are eligible for PIP.
What's the difference between OA and RA?
OA is wear-and-tear cartilage loss. RA is an autoimmune inflammatory disease. RA usually affects joints symmetrically and causes prolonged morning stiffness (>1 hour).
Can diet help RA?
A Mediterranean-style diet rich in oily fish, olive oil and vegetables can reduce inflammatory markers. It doesn't replace DMARDs but supports overall control.