Rheumatoid Arthritis - Symptoms, Causes, Treatment

Written by Dr. Simon Khela MBChB MRCGP, GMC Registered Doctor

Last reviewed: 21-07-2026

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Joint pain is one of the most common reasons people book an appointment with me. Most of the time it's mechanical - overuse, an old injury, or the gradual wear of osteoarthritis. But every so often, a patient describes something subtly different: stiffness that lingers for an hour after waking, swelling that has crept into both hands, or a tiredness that feels out of proportion to everything else going on in their life.

That combination is one of the things I'm trained to listen for, because it can be the first sign of rheumatoid arthritis (RA) - a condition that, in my experience, is still widely misunderstood by patients and, frankly, sometimes diagnosed later than it should be.

This article is written to help you understand what rheumatoid arthritis actually is, what causes it, how it's diagnosed in the UK, and what modern treatment looks like. It isn't a substitute for seeing a doctor, but it should help you ask better questions when you do.

Quick Answer: What Is Rheumatoid Arthritis?

Rheumatoid arthritis is a long-term autoimmune condition in which the immune system mistakenly attacks the lining of the joints (the synovium), causing pain, swelling and stiffness - most often in the hands, wrists and feet. Unlike wear-and-tear arthritis, RA is a whole-body disease that can also affect the eyes, lungs and heart, which is why early diagnosis and ongoing treatment matter so much.

What Is Rheumatoid Arthritis, Exactly?

Rheumatoid arthritis is classed by the NHS as a long-term autoimmune disease. In simple terms, the immune system - which is designed to protect you from infection - becomes confused and starts attacking healthy tissue instead. In RA, its target is the synovium, the thin membrane that lines and lubricates your joints.

A few things I try to explain clearly to patients when they're newly diagnosed:

• It's a systemic condition, not just a joint problem. Inflammation from RA can circulate throughout the body, which is why fatigue, low mood and general "unwellness" are so common alongside joint symptoms.
• It's a fluctuating disease. Most people experience flares (periods where symptoms worsen) and periods of relative calm. This unpredictability is often one of the hardest parts to live with.
• There is currently no cure, but there is a great deal that can be done to control it. Many patients are surprised to learn that with early, well-managed treatment, remission or near-remission is a realistic goal for a large proportion of people.

According to the National Rheumatoid Arthritis Society, roughly 1% of the UK adult population - somewhere in the region of 400,000 to 450,000 people - live with RA, and it affects women two to three times more often than men. It most commonly develops between the ages of 40 and 60, though I have diagnosed it in patients well outside that range, including some in their twenties.

How Rheumatoid Arthritis Differs From Osteoarthritis

One of the most common misconceptions I encounter in clinic is that rheumatoid arthritis is simply "a worse version" of ordinary arthritis. In reality, they are different diseases with different mechanisms, and the distinction matters because the treatment approach is completely different.

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Recognising the Symptoms of Rheumatoid Arthritis

Early symptoms of rheumatoid arthritis are often subtle, and I'd say a significant minority of patients initially put them down to "getting older" or overdoing it at the gym. They typically develop gradually over several weeks, although occasionally they appear quickly, over just a few days.

Joint symptoms usually include:

• Pain, tenderness, warmth or swelling in one or more joints
• Stiffness that is worse first thing in the morning or after resting, often lasting well over half an hour
• Symmetrical involvement - for example, both wrists or the same finger joints on each hand
• The small joints of the hands and feet are frequently affected first, particularly the knuckles

Beyond the joints, RA can also cause:

• Persistent fatigue, sometimes described as more exhausting than the joint pain itself
• Low-grade fevers or a general sense of feeling unwell
• Unexplained weight loss
• Small, firm lumps under the skin near affected joints (rheumatoid nodules)
• Dry eyes or a dry mouth
• Anaemia, often picked up incidentally on blood tests

A question I am frequently asked is whether joint pain that comes and goes can still be RA. The answer is yes - some people experience a pattern called palindromic rheumatism, where attacks of joint pain and swelling resolve completely between episodes before RA becomes more established.

What Causes Rheumatoid Arthritis?

The honest answer is that we don't fully know what triggers rheumatoid arthritis, and I think it's important to say that plainly rather than oversimplify it. What research does show is that it results from an interaction between genetic susceptibility and environmental triggers.

Genetic factors

• Certain genes, particularly variations in the HLA-DRB1 gene (sometimes called the "shared epitope"), are strongly linked to RA risk
• Having a close relative with RA modestly increases your own risk, although RA is not straightforwardly inherited in the way some genetic conditions are
• Genetics alone don't determine whether someone develops RA - most people with these gene variants never go on to develop the condition

Environmental and lifestyle triggers

• Smoking is the most well-established modifiable risk factor, and evidence suggests it can both increase the risk of developing RA and worsen disease severity once it's present
• Gum disease has been linked to RA in research, possibly through a shared inflammatory pathway
• Obesity appears to be an emerging risk factor, linked to the inflammatory activity of fat tissue
• Hormonal factors may play a role, given how much more common RA is in women, although this relationship isn't fully understood
• Some viral or bacterial infections have been proposed as possible triggers, though the evidence here remains less conclusive

One of the most common concerns I see in practice is a patient asking, "Did I cause this?" - usually after reading about lifestyle risk factors online. The honest answer is that RA develops through a combination of factors mostly outside anyone's control, and smoking cessation is one of very few genuinely modifiable levers available.

How Is Rheumatoid Arthritis Diagnosed in the UK?

Diagnosing RA can be genuinely difficult in the early stages, because joint pain and stiffness are common to many conditions. This is one of the reasons why the pathway from first GP appointment to specialist assessment matters so much.

What typically happens:

1. GP assessment. Your doctor will ask about your symptoms and examine the affected joints, looking for swelling, warmth and the symmetrical pattern typical of RA.
2. Blood tests. Private blood tests commonly used at this stage include rheumatoid factor (RF), and anti-CCP antibodies if RF is negative, alongside inflammatory markers such as CRP and ESR. It's worth knowing that around 20-30% of people with RA test negative on these antibodies - a pattern known as seronegative RA - so a negative blood test does not rule the condition out.
3. Imaging. X-rays of the hands and feet are usually requested to check for early joint erosions, and our imaging and radiology services can also support ultrasound assessment where a clearer picture of joint inflammation is needed.
4. Specialist referral. Current NICE guidance is clear that anyone with suspected persistent joint inflammation of unclear cause should be referred for a specialist opinion, and that referral should happen urgently - even with normal blood results - if the small joints of the hands or feet are affected, more than one joint is involved, or symptoms have been present for three months or longer.

Many patients are surprised to learn just how much emphasis is placed on speed here. Delaying that referral, even while waiting on blood test results, is specifically discouraged, because early treatment within the first few months of symptom onset appears to significantly improve long-term joint outcomes. This is echoed in the Royal College of GPs' own clinical education on inflammatory arthritis, which emphasises the GP's role in recognising early disease promptly, since delays to specialist treatment can have lasting consequences for joint function.

Once you have your results in hand, understanding what your blood results actually mean can help you have a more informed conversation with whoever is managing your care, whether that's your GP or a rheumatologist. If a diagnosis looks likely, prompt access to specialist referral pathways can meaningfully shorten the time between suspicion and confirmed diagnosis.

Rheumatoid Arthritis Treatment: What Actually Works

As NHS treatment guidance confirms, there's no cure for rheumatoid arthritis, but treatment has changed dramatically over the past two decades. The current approach used across UK rheumatology is called "treat-to-target" - meaning treatment is actively adjusted, often monthly in the early stages, until disease activity is brought down to remission or as close to it as possible, rather than simply managing symptoms indefinitely.

Disease-modifying anti-rheumatic drugs (DMARDs)

• Conventional DMARDs such as methotrexate, sulfasalazine and leflunomide are usually first-line treatment, ideally started within three months of persistent symptoms beginning
• Short-term steroid "bridging" treatment is often used alongside a new DMARD, since these drugs can take two to three months to take full effect
• If a single DMARD isn't enough, doctors will often add further conventional DMARDs in combination before considering more advanced options
• Biologic and targeted synthetic DMARDs (including TNF inhibitors and JAK inhibitors) are reserved for moderate-to-severe disease that hasn't responded adequately to combination conventional DMARD therapy

A clinical point worth flagging: the MHRA issued safety advice in 2023 on JAK inhibitors, highlighting increased risks of cardiovascular events, blood clots, certain cancers and serious infection in some patient groups, particularly those over 65, smokers, or those with existing cardiovascular risk factors. This is exactly the kind of benefit-versus-risk conversation that should happen with your specialist before starting one of these medicines, not something to be alarmed about in isolation.

Symptom control

• NSAIDs can help with pain and stiffness but don't slow joint damage, so they're generally used alongside, not instead of, DMARDs
• Short-term steroid injections directly into an affected joint can settle a flare quickly, and joint injections are something we're regularly asked about by patients wanting rapid relief in a single problematic joint

The wider care team

• Physiotherapy to maintain joint flexibility, muscle strength and general fitness
• Occupational therapy, especially where hand function or daily tasks are affected
• Podiatry, since foot involvement is common and often under-discussed
• Psychological support - living with a chronic, unpredictable condition takes a genuine toll on mental health, and this is a legitimate part of treatment, not an afterthought

Getting your medication sorted efficiently matters more than people expect when you're mid-flare; ongoing access to private prescriptions can help avoid delays in restarting or adjusting treatment while you wait for a routine NHS appointment slot.

Surgery is occasionally needed - not to "fix" RA, but to address specific complications such as tendon rupture, nerve compression (like carpal tunnel syndrome), or joint damage that hasn't responded to non-surgical treatment. It's aimed at relieving pain and preserving function, rather than achieving cosmetic improvement.

Living Well With Rheumatoid Arthritis

Managing RA day-to-day is about more than medication. A few things I regularly discuss with patients:

• Cardiovascular risk. RA is an independent risk factor for heart disease, largely because of the chronic inflammation involved - not just shared risk factors like smoking. Regular heart health checks become genuinely important once you have this diagnosis, not just a routine extra.
• Diet. There's no strong evidence that any specific diet will control RA on its own, but a Mediterranean-style pattern - more fruit, vegetables, wholegrains and oily fish, less red meat, swapping butter for plant-based oils - is generally encouraged for overall health.
• Bone health. Long-term steroid use and reduced activity during flares can both affect bone density, so this is worth discussing at your annual review.
• Smoking cessation. Beyond reducing your original risk of developing RA, stopping smoking also appears to improve response to some RA medications.
• Pregnancy planning. Some DMARDs, including methotrexate, are not safe in pregnancy and need to be stopped and substituted well in advance under specialist guidance if you're planning a family.
• Vitamin D. Reduced outdoor activity during flares, alongside the general link between chronic inflammatory conditions and lower vitamin D levels, means vitamin D deficiency is worth keeping an eye on.

Annual reviews aren't just a formality - they're an opportunity to check for the comorbidities RA quietly increases the risk of, including high blood pressure, heart disease, osteoporosis and depression, and to reassess whether your current treatment is still the right fit.

Between appointments, patient charities and clinician-reviewed resources such as Versus Arthritis and Patient.info are worth bookmarking, particularly for peer support and practical day-to-day coping strategies that a single consultation doesn't always have time to cover.

Common Myths and Misconceptions About Rheumatoid Arthritis

"RA only affects older people." It's most commonly diagnosed between 40 and 60, but I've diagnosed it in patients in their twenties. A related condition, juvenile idiopathic arthritis, affects children.

"If my blood tests are negative, I don't have RA." Not necessarily true. A meaningful proportion of people with RA are "seronegative" - their antibody tests come back negative despite having the condition clinically. Diagnosis relies on the overall clinical picture, not a single blood result.

"RA medications are more dangerous than the disease itself." Every medication carries some risk, and that's precisely why treatment decisions are individualised and monitored closely. Left untreated, however, RA carries its own serious risks, including irreversible joint damage and a higher risk of cardiovascular disease.

"You should rest completely during a flare." Complete rest for extended periods can lead to muscle weakening and stiffer joints. Gentle, appropriately paced movement - guided by physiotherapy - is usually more helpful than total inactivity.

"Diet changes alone can put RA into remission." A healthy diet supports overall wellbeing, but there's no dietary approach proven to replace disease-modifying treatment.

When Should You See a GP About Joint Symptoms?

As a general rule, I would encourage anyone to seek an assessment if they notice:

• Joint swelling, pain or stiffness lasting more than a few weeks
• Morning stiffness lasting longer than 30 minutes
• Symmetrical joint symptoms affecting both sides of the body
• Persistent fatigue alongside joint symptoms
• A family history of RA combined with new joint symptoms

Given how strongly early treatment influences long-term outcomes, waiting to "see if it settles down" isn't generally the safest approach with suspected inflammatory joint disease. If getting a timely appointment feels difficult, online GP consultations can be a useful way to get an initial assessment and, where appropriate, a swift referral into the right pathway.

Frequently Asked Questions