Rheumatoid arthritis (RA) causes joint pain, swelling, and stiffness that typically affects both sides of the body in a symmetrical pattern. Unlike the wear-and-tear damage of osteoarthritis, RA is an autoimmune condition where the immune system attacks the lining of the joints, producing inflammation that can eventually damage cartilage and bone. The symptoms often start gradually in the small joints of the hands and feet before spreading to larger joints over weeks or months.
Which Joints Are Affected First
The earliest signs of RA tend to appear in the knuckles at the base of the fingers, the middle finger joints, the wrists, and the small joints at the ball of the foot. One useful early clue: if squeezing across the knuckles or the ball of the foot produces tenderness, that pattern suggests inflammatory arthritis rather than a simple strain or overuse injury.
As the disease progresses, the shoulders, elbows, knees, and ankles often become involved. The joints at the very tips of the fingers are generally spared, which is one way clinicians distinguish RA from osteoarthritis (which commonly hits those fingertip joints). The spine is also unaffected, with one exception: the upper part of the neck, at the cervical spine, can be involved in more advanced disease.
Symmetrical Swelling and Stiffness
A hallmark of established RA is symmetrical joint involvement. If your left wrist is swollen and stiff, your right wrist likely is too. That said, symmetry isn’t always present early on. Some people start with pain in just one or two joints, and the mirror-image pattern develops over time. So a lack of symmetry in the first weeks doesn’t rule RA out.
Affected joints feel warm to the touch, look swollen, and may have a soft, doughy quality when pressed. Range of motion shrinks as inflammation builds, making everyday tasks like opening jars, turning doorknobs, or gripping a pen noticeably harder.
Morning Stiffness That Lasts
Almost everyone with RA experiences morning stiffness, but what sets it apart from the brief stiffness of osteoarthritis is how long it lasts. With osteoarthritis, joints loosen up within about 15 to 30 minutes of moving around. With RA, morning stiffness typically persists for at least 30 minutes and often well over an hour. Some people describe their hands as feeling like rigid claws for the first part of the day, gradually loosening as they move and warm up. This prolonged stiffness can also return after any period of inactivity, not just sleep.
Fatigue, Fever, and Appetite Loss
RA is a systemic disease, meaning it affects the whole body, not just the joints. Many people are surprised by how exhausting it can be. Persistent, deep fatigue is one of the most common complaints, sometimes more disabling than the joint pain itself. Low-grade fevers, a general feeling of being unwell, loss of appetite, and unintended weight loss can all accompany active disease. These whole-body symptoms tend to flare alongside joint symptoms and improve when inflammation is better controlled.
Rheumatoid Nodules
About 20 to 30 percent of people with RA develop firm lumps under the skin called rheumatoid nodules. They form near joints and pressure points you use frequently: elbows, fingers, forearms, heels near the Achilles tendon, the lower back, and hips. They can feel like a small pebble trapped under the skin, though some are softer and squishier. Most range from smaller than a pencil eraser to about the size of a marble, though in rare cases they grow much larger.
Rheumatoid nodules themselves are usually painless, but the tissue around them can be tender, especially when they sit close to an inflamed joint. In uncommon cases, nodules can also develop inside the lungs, on the white part of the eye, or on the vocal cords.
Effects Beyond the Joints
Because RA involves chronic, body-wide inflammation, it can affect organs far from the joints. The most significant impacts involve the lungs and the cardiovascular system.
Lungs
RA-related lung disease involves scarring and inflammation of lung tissue, which can cause a persistent dry cough and progressive shortness of breath. In some cases, antibodies associated with RA have been detected in lung fluid even before joint symptoms appear, suggesting the lungs may be an early site of immune activity. Not everyone with RA develops lung problems, but it’s one of the more serious potential complications.
Heart and Blood Vessels
People with RA face a significantly higher risk of cardiovascular disease. Meta-analyses show a 48% increased risk of cardiovascular events like heart attacks and strokes compared to the general population, and cardiovascular mortality is roughly 52% higher. The chronic inflammation of RA accelerates the buildup of plaque in arteries, a process that operates largely in the background without obvious symptoms until a cardiac event occurs. This is why managing inflammation in RA has benefits that extend well beyond joint comfort.
Eyes and Mouth
RA is closely linked to dryness of the eyes and mouth, a condition called Sjögren’s syndrome. You might notice gritty, irritated eyes or difficulty swallowing dry foods. Inflammation of the white part of the eye (scleritis) can also occur, causing redness and pain that goes beyond typical dry eye.
How RA Is Diagnosed
There is no single test that confirms RA. Doctors use a combination of symptoms, physical examination, blood work, and sometimes imaging. The classification system used by rheumatologists assigns points across four categories: the number and type of joints involved, blood markers (including rheumatoid factor and anti-CCP antibodies), inflammation levels, and how long symptoms have lasted. A score of 6 or higher out of 10 points to a definite diagnosis.
Practically, this means your doctor will ask how many joints are swollen, whether they’re large or small joints, and whether symptoms have persisted for at least six weeks. Blood tests check for antibodies and markers of inflammation. Having high levels of rheumatoid factor or anti-CCP antibodies contributes more points toward a diagnosis, but some people with RA test negative for both, a form called seronegative RA. The number and pattern of affected joints carry the most weight in the scoring system: involvement of more than 10 joints, with at least one small joint, earns the maximum 5 points in that category alone.
What Early Symptoms Feel Like Day to Day
In the earliest stages, RA can be easy to dismiss. You might notice that your rings feel tighter in the morning, that your grip is weaker than usual, or that the balls of your feet ache when you step out of bed. Some people first notice trouble with fine motor tasks: buttoning a shirt takes longer, typing becomes uncomfortable, or a handshake feels painful. The symptoms tend to come and go at first, with flares lasting days to weeks separated by periods of relative calm. Over time, flares become more frequent and involve more joints if the disease isn’t treated.
Pain at rest is another distinguishing feature. Osteoarthritis pain worsens with activity and eases when you stop moving. RA pain can be just as bad, or worse, when you’re sitting still. Many people report that their joints ache most intensely in the middle of the night or first thing in the morning, before any activity at all.