Rheumatoid Arthritis
Autoimmune inflammatory joint disease — early diagnosis and treatment
Rheumatoid arthritis (RA) is an autoimmune condition in which the body's immune system mistakenly attacks the lining of the joints, causing painful inflammation. Unlike osteoarthritis, RA affects people of any age, can involve multiple joints simultaneously, and carries systemic complications. Early diagnosis and treatment are critical to preventing joint damage and disability.
What is Rheumatoid Arthritis?
Rheumatoid arthritis is a chronic inflammatory disease driven by the immune system attacking synovial tissue — the membrane that lines joints. This causes synovitis (joint lining inflammation), which over time erodes cartilage and bone and can lead to permanent joint deformity. RA typically affects the small joints of the hands, wrists and feet in a symmetrical pattern, although any joint can be involved. It is not just a joint disease: RA can affect the lungs, heart, eyes and blood vessels, and carries increased cardiovascular risk. Approximately 400,000 people in the UK live with RA, and it is more common in women.
Causes & Triggers
The exact cause of RA is not fully understood, but it results from a combination of genetic susceptibility and environmental triggers. The strongest genetic risk factor is the HLA-DRB1 gene. Environmental triggers include smoking — which is the most important modifiable risk factor and significantly worsens disease severity and treatment response. Other factors include hormonal influences (RA often improves during pregnancy and flares post-partum), gut microbiome changes, and previous infections. RA is not caused by lifestyle alone, but smoking cessation meaningfully improves outcomes for those receiving treatment.
Signs & Diagnosis
Early RA typically presents with symmetrical joint pain and swelling in the small joints of the hands and feet, prolonged morning stiffness lasting more than 30 minutes, fatigue, and a general feeling of being unwell. Blood tests often show elevated inflammatory markers (CRP, ESR) and the presence of rheumatoid factor (RF) or anti-CCP antibodies — although seronegative RA also occurs. A comprehensive evaluation of disease activity using scores such as DAS28 allows rheumatologists to monitor response to treatment and make treat-to-target decisions. X-rays and MRI help assess for joint damage, particularly in established disease. Early referral to rheumatology — ideally within three months of symptom onset — is essential.
Living with RA
The outlook for RA has transformed dramatically in recent decades. With modern disease-modifying drugs (DMARDs), remission is an achievable goal for most patients when treatment is started early and adjusted to reach target. The most important message is that DMARDs are not just painkillers — they protect joints from damage and should be taken consistently as prescribed. Physiotherapy helps maintain joint mobility and muscle strength, occupational therapy provides practical aids to protect joints during daily tasks, and smoking cessation is one of the most powerful things a person with RA can do to improve their long-term outcome. Versus Arthritis provides excellent peer support. Seek urgent medical advice if you develop sudden severe joint swelling, fever, or any side effects from your medications.