Rheumatoid arthritis (RA) causes joint pain, swelling, and stiffness that typically starts in the small joints of the fingers and toes, then spreads to larger joints over time. But because RA is a systemic inflammatory disease, it can also produce whole-body symptoms like fatigue, low-grade fever, and weight loss, and in some cases affect the lungs, heart, eyes, and skin.
Early Signs That Are Easy to Miss
The first symptoms of RA are often subtle enough that people dismiss them. You might notice tenderness or pain in the small joints of your fingers or toes, or an ache in a larger joint like a knee or shoulder. These early signs tend to come and go, which makes them easy to write off as overuse or normal aging. Fatigue is another early hallmark, sometimes so pronounced it interferes with daily life before joint symptoms become obvious.
A key early indicator is morning stiffness that lasts a long time. With osteoarthritis, stiffness after sleeping typically fades within 30 minutes of getting up. In RA, morning stiffness often persists for an hour or longer and can feel like your joints are locked in place. If you’re waking up with stiff, achy hands that take most of the morning to loosen, that pattern is worth paying attention to.
Which Joints Are Affected
RA has a characteristic pattern of joint involvement. The joints affected most frequently are the middle and base knuckles of the fingers, the wrists, and the small joints at the base of the toes. Over time, RA can also involve the elbows, shoulders, ankles, knees, and hips, but it tends to start in those smaller joints.
One of the features that distinguishes RA from other types of arthritis is symmetry. If the knuckles on your left hand are swollen and painful, the same knuckles on your right hand are likely affected too. That said, symmetry isn’t always present early on. When only a few joints are involved at the start, the pattern may look one-sided, and that alone doesn’t rule out RA.
What the Joint Symptoms Feel Like
RA joint pain is driven by inflammation, so the affected joints often feel warm to the touch, look visibly swollen, and may appear reddened. This is different from osteoarthritis, where joints tend to ache and feel stiff but don’t usually have that warm, boggy swelling. In RA, the swelling has a soft, spongy quality because it comes from inflamed tissue lining the joint rather than bony changes.
The pain in RA is typically worst after periods of inactivity. Sitting for an hour, sleeping through the night, or any prolonged rest can leave your joints feeling stiff and sore. Gentle movement usually helps, at least partially. This is another contrast with osteoarthritis, where pain tends to worsen with activity and improve with rest.
Symptoms Beyond the Joints
Because RA is an autoimmune condition driven by widespread inflammation, it affects more than joints. Many people with RA experience persistent fatigue that feels disproportionate to their activity level, along with a general sense of being unwell. Low-grade fevers and unexplained weight loss can accompany active disease.
About 7% of people with RA have rheumatoid nodules at the time of diagnosis. These are firm lumps under the skin, most often found over pressure points like the back of the elbow, though they can appear on the fingers, feet, or even inside the lungs. Historically, 30 to 40% of people developed nodules at some point during their disease, but with modern treatment the rate has dropped to around 16%.
Lung Involvement
Lung problems are one of the more common complications outside the joints. A meta-analysis found that roughly 21% of people with RA develop interstitial lung disease, a condition where inflammation causes scarring in the lung tissue. The risk is highest in people over 60 with moderate to high disease activity. Symptoms include a dry cough and shortness of breath that gradually worsens, though some cases are detected on imaging before a person notices anything.
Heart, Eyes, and Skin
RA increases the risk of heart disease by promoting inflammation in blood vessels. Fluid around the heart (pericardial effusion) is relatively common, though most people don’t feel it. Symptomatic heart inflammation is rare but does occur.
Dry eyes are a frequent complaint. Many people with RA develop a secondary condition that reduces tear and saliva production, leaving the eyes feeling gritty or irritated and the mouth persistently dry. Skin can also be affected beyond nodules, with occasional rashes or thinning related to both the disease itself and its treatment.
Flares and Remission
RA doesn’t stay constant. It tends to cycle between flares, when symptoms intensify, and quieter periods. During a flare, your joints may become more swollen and painful, fatigue deepens, and you might notice increased stiffness. Flares can be triggered by stress, infection, overexertion, or sometimes nothing identifiable at all. Some people have frequent flares lasting days to weeks, while others go months between episodes.
Between flares, you may feel nearly normal or still have low-level joint stiffness and tiredness. The goal of modern treatment is to push the disease into remission, where inflammation stays quiet and joint damage doesn’t progress. Catching symptoms early makes remission more achievable, because RA can cause permanent joint erosion within the first one to two years if left unchecked.
How RA Is Identified
No single test confirms RA. Diagnosis relies on a combination of symptoms, physical examination, blood work, and sometimes imaging. Doctors use a scoring system that evaluates four things: which joints are involved, whether certain antibodies are present in the blood, whether markers of inflammation are elevated, and how long symptoms have lasted.
Two blood tests are central to the workup. Rheumatoid factor (RF) is positive in about 60% of people with RA, and anti-CCP antibodies are positive in roughly 55%. Anti-CCP is more specific, meaning a positive result is more likely to point to RA rather than another condition. But 20 to 30% of people with RA test negative on both, a condition called seronegative RA. In these cases, the diagnosis rests more heavily on the pattern of joint symptoms and imaging findings.
If you’re experiencing persistent joint swelling in your hands or feet, morning stiffness lasting well over 30 minutes, or unexplained fatigue alongside joint pain, those are the symptoms that make RA worth investigating. Early RA is far more treatable than established disease, and the window for preventing joint damage is measured in months, not years.