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Lupus is a long-term autoimmune condition that causes the body’s immune system to attack healthy tissue. It can affect almost any part of the body, from joints and skin to internal organs like the kidneys or heart. But what makes lupus especially challenging is how unpredictable it can be.

Symptoms don’t always show up the same way for everyone. Some people experience a flare-up of joint pain or fatigue and then feel fine for weeks. Others live with more constant discomfort. Lupus can also mimic other conditions, which means it often takes time to get a clear diagnosis—and even longer to feel like your experience is understood.

There’s no single test for lupus, and the symptoms can change over time. For many people, it’s a journey of connecting the dots between seemingly unrelated health issues.

That’s why learning what to look for matters. Whether you’re managing a recent diagnosis or just starting to wonder if something deeper might be going on, here are some of the most common signs of lupus to keep on your radar.

Joint Pain and Swelling

If your joints feel stiff or achy when you wake up—especially in your hands, wrists, or knees—it might not be random. Lupus can trigger joint inflammation that flares and fades, sometimes without warning.

Unlike arthritis, this pain can bounce from one joint to another and doesn’t always leave lasting damage. But in the moment, it can make simple tasks feel harder than they should.

Woman in a white shirt holding her wrist with a pained expression, illustrating how lupus can cause joint inflammation and stiffness, often affecting hands and wrists without warning.

Skin Rash

Lupus rashes don’t always itch or hurt—but they can still tell you something’s off. One of the most recognizable signs is a butterfly-shaped rash across the cheeks and nose.

Others might notice red, scaly patches on their chest, arms, or scalp, especially after sun exposure. If your skin reacts more than it used to, lupus could be affecting how your body handles light.

Illustrated image of a doctor examining a butterfly-shaped rash on a woman’s face, with medical supplies and a syringe nearby, highlighting how lupus rashes—especially on the cheeks and nose—can signal changes in the body’s immune response.

Recurring Low-Grade Fevers

Your body’s trying to tell you something when it runs a low-grade fever for no clear reason. With lupus, these fevers usually stay mild—around 99 to 101°F—but they can happen often.

They’re not usually tied to infections, which makes them easy to miss or brush off. Still, if they keep coming back, it’s worth paying attention.

Man wrapped in a blanket looking concerned at a thermometer, surrounded by tissues, illustrating the concept of recurring low-grade fevers—a subtle but common sign of lupus that often goes unnoticed because it’s not caused by an infection.

Sores in the Mouth or Nose

Some people with lupus get sores along their gums, inside the cheeks, or even in the nose.

They’re usually painless, but that doesn’t mean they’re harmless. These ulcers tend to stick around longer than the average canker sore and may show up during a flare. You might not spot them right away—but a doctor probably will.

Multiple hands gently holding a purple awareness ribbon, symbolizing lupus and its many symptoms—including painless sores in the mouth or nose that may signal a flare and are often detected during medical exams.

Hair Thinning or Loss

If you’ve started noticing more hair on your pillow or in your brush, it might be more than just stress. Lupus can cause inflammation at the root of the hair follicle, leading to gradual thinning or patchy hair loss along the scalp.

Some people also lose eyebrow, eyelash, or body hair. In many cases, hair will grow back once treatment begins and inflammation calms. But if scarring develops on the scalp, that hair loss can be permanent.

Woman holding a hairbrush full of shed strands, inspecting hair loss possibly linked to lupus-related inflammation, which can cause gradual thinning or patchy bald spots on the scalp and body.

Chest Pain and Breathing Problems

If it hurts to take a deep breath, lupus could be affecting your lungs. The condition can cause inflammation in the lining of the lungs (pleuritis) or even in the diaphragm. For some, this shows up as sharp chest pain; for others, it’s more like a tightness or pressure that won’t go away.

It’s easy to mistake these symptoms for something else—especially if they come and go—but they can be serious and shouldn’t be ignored.

Jigsaw puzzle graphic with the word “LUPUS” revealed in the center piece, surrounded by medical items like pills, a thermometer, leaves, and a notepad—illustrating the complex, multi-system nature of lupus and its often puzzling symptoms, including chest pain and breathing issues.

Watch for Signs of Kidney Trouble

Lupus can trigger inflammation in the kidneys, a condition known as lupus nephritis. This affects how well your body filters waste, which can lead to serious complications if left untreated. The signs aren’t always obvious—some people notice swelling in their legs or feet, while others see changes in their urine, like foaming, dark color, or even blood.

High blood pressure and frequent nighttime urination can also be red flags. Since these symptoms often develop gradually, it’s easy to overlook them at first. But untreated kidney issues can escalate quickly, so it’s worth bringing up any changes to your doctor, especially if they show up alongside other lupus symptoms.

A medical professional in scrubs and gloves interacts with a digital interface displaying the word “LUPUS” surrounded by icons representing symptoms and treatment, symbolizing the complexity of lupus management and its potential to affect organs like the kidneys.

Gastrointestinal Issues That Don’t Add Up

Lupus can sometimes mess with your gut. That might look like heartburn that hangs around, a vague sense of nausea, or cramping that comes and goes for no clear reason. During flares, some people also deal with vomiting or abdominal pain that doesn’t seem connected to anything they ate.

If your stomach’s acting up without a clear cause, it might be inflammation tied to lupus. Some symptoms ease with over-the-counter meds, but if they keep coming back, it’s worth bringing up.

A doctor in a white coat holds an illustrated image of the digestive system between their hands, symbolizing the gastrointestinal symptoms that can occur with lupus, such as nausea, cramping, or unexplained abdominal pain.

Dry, Irritated Eyes

If your eyes often feel gritty, itchy, or overly tired—especially in bright light or after staring at a screen—lupus could be part of the picture. The condition sometimes reduces tear production, leaving your eyes vulnerable to irritation. This can also happen when lupus overlaps with Sjögren’s syndrome, another autoimmune disorder that affects moisture-producing glands. You might find yourself blinking more just to stay comfortable, or using eye drops more often than usual.

A woman sits at her desk in front of a laptop, pinching the bridge of her nose in discomfort, possibly from dry or irritated eyes—an issue that can occur in people with lupus or related autoimmune conditions like Sjögren’s syndrome.

A Mouth That Feels Too Dry

Lupus can interfere with the glands that keep your mouth moist, leading to a dry, sticky feeling that doesn’t go away with a glass of water.

You might notice trouble swallowing, more cavities than usual, or a persistent sore throat. Sometimes small ulcers show up on the roof of the mouth, tongue, or inner cheeks. If your mouth feels dry throughout the day—even when you’re well-hydrated—it could be a sign your immune system is in overdrive.

A graphic illustration of a person drinking from an oversized water bottle, symbolizing extreme thirst—often a sign of chronic dry mouth. In lupus, this symptom may stem from immune system dysfunction affecting moisture-producing glands.

Other Symptoms to Watch For

Lupus is known for being unpredictable. For some people, symptoms come and go. Others live with constant low-level issues that don’t always feel connected—until they are. You might notice sudden fatigue that knocks you out for days, cold fingers that turn white or blue, or headaches that linger longer than usual. Some people experience chest pain, muscle aches, or unusual blood clotting. Even less common signs like seizures or anemia can point back to lupus.

If you’ve been dealing with a combination of symptoms that don’t quite add up, trust your instincts and talk to a healthcare provider. Lupus isn’t always easy to pin down—but recognizing the pattern is a powerful first step.

Illustrated infographic showing common lupus symptoms: butterfly-shaped facial rash, hair loss, discolored fingers, sun sensitivity, and mouth ulcers. A doctor stands beside a woman with facial redness, highlighting the need to recognize seemingly unrelated symptoms as part of a broader lupus pattern.

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Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.