Systemic Lupus Erythematosus
What is Systemic Lupus Erythematosus?
Systemic lupus erythematosus is a chronic autoimmune disease where your immune system attacks your own healthy tissues and organs. Your immune system normally protects you from infections and illness. In lupus, it mistakenly treats your own cells as foreign invaders.
Lupus can affect many parts of your body including your joints, skin, kidneys, heart, lungs, brain, and blood cells. The condition causes inflammation and tissue damage throughout the body. It affects people differently, ranging from mild symptoms to serious complications.
The disease often comes and goes in cycles called flares and remissions. During a flare, symptoms get worse. During remission, symptoms improve or disappear completely. With proper monitoring and treatment, most people with lupus can lead active lives.
Symptoms
- Butterfly-shaped rash across the cheeks and nose
- Joint pain, stiffness, and swelling
- Extreme fatigue that doesn't improve with rest
- Fever with no known cause
- Fingers and toes that turn white or blue in cold temperatures
- Chest pain when breathing deeply
- Skin rashes that appear or worsen in sunlight
- Hair loss or thinning
- Mouth sores or ulcers
- Headaches, confusion, or memory problems
- Shortness of breath
- Dry eyes
Some people have mild symptoms that develop slowly over time. Others may experience no symptoms for years before their first flare. Early signs can be vague and easy to miss, making diagnosis challenging.
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Causes and risk factors
The exact cause of systemic lupus erythematosus is not fully understood. Researchers believe a combination of genetics, hormones, and environmental factors trigger the disease. Certain genes may make you more likely to develop lupus, but genes alone don't cause it. Something in your environment likely activates the condition in people who are genetically susceptible.
Risk factors include being female, as women are 9 times more likely to develop lupus than men. The disease most often appears between ages 15 and 45. African American, Hispanic, Asian, and Native American people face higher risk than white people. Other triggers may include sunlight exposure, certain infections, and some medications. Smoking and exposure to silica dust may also increase risk.
How it's diagnosed
Diagnosing systemic lupus erythematosus can be challenging because symptoms vary widely and overlap with other conditions. Your doctor will review your medical history, perform a physical exam, and order blood tests. No single test can diagnose lupus, but specific blood tests help identify the condition.
The ANA screen detects antinuclear antibodies that are present in most people with lupus. Complement protein tests like C4 and C4c help measure immune system activity, as these proteins often drop during lupus flares. Tests for rheumatoid factor and Sjogren antibodies help rule out other autoimmune conditions. Additional markers like beta 2 microglobulin and inflammatory markers such as interleukin-6 show disease activity levels. Rite Aid offers testing for these biomarkers through our preventive health panel at Quest Diagnostics locations nationwide.
Treatment options
- Anti-inflammatory medications to reduce joint pain and swelling
- Antimalarial drugs like hydroxychloroquine to control symptoms and prevent flares
- Corticosteroids to quickly reduce inflammation during flares
- Immunosuppressants to calm an overactive immune system
- Sun protection including sunscreen, protective clothing, and avoiding peak sun hours
- Regular, gentle exercise to maintain joint flexibility and reduce fatigue
- Anti-inflammatory diet rich in omega-3 fatty acids, vegetables, and whole foods
- Stress management through meditation, yoga, or counseling
- Adequate sleep of 7 to 9 hours per night
- Avoiding smoking and limiting alcohol
- Regular monitoring with blood tests to catch flares early
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- Simple blood draw at your nearest lab
- Results in days, not weeks
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Frequently asked questions
Systemic lupus erythematosus is the most common and serious form of lupus. The word systemic means it can affect multiple organs and systems throughout your body. Other types of lupus include discoid lupus, which affects only the skin, and drug-induced lupus, which goes away when you stop taking certain medications.
There is currently no cure for systemic lupus erythematosus. However, treatment can control symptoms and prevent serious complications. Many people with lupus live long, active lives with proper medical care. Research continues to develop better treatments and understand the root causes of the disease.
Several blood tests help diagnose lupus. The ANA screen detects antibodies found in most people with lupus. Complement tests measure C4 and C4c proteins that drop during active disease. Your doctor may also test for specific antibodies like Sjogren antibodies and inflammatory markers. No single test confirms lupus, so doctors look at multiple test results along with your symptoms.
Women develop lupus about 9 times more often than men. Hormones likely play a role since symptoms often appear during childbearing years. Estrogen may affect immune system function in ways that increase lupus risk. However, the exact reasons are not fully understood and research continues in this area.
While you cannot prevent all flares, certain steps can reduce your risk. Protect yourself from sun exposure with sunscreen and protective clothing. Get enough rest and manage stress through relaxation techniques. Avoid smoking and stay on your prescribed medications even when you feel well.
Lupus does have a genetic component, but it is not directly inherited. Having a family member with lupus increases your risk, but most people with lupus have no family history. If you have lupus, your child has about a 5 percent chance of developing it. Genetics combine with environmental triggers to cause the disease.
A lupus flare is when your symptoms suddenly get worse. You may experience increased fatigue, joint pain, rashes, or fever. Flares can be mild or severe. They happen when your immune system becomes more active and causes more inflammation throughout your body.
Diet may help reduce inflammation and support overall health. Focus on foods rich in omega-3 fatty acids like fish, walnuts, and flaxseed. Eat plenty of fruits, vegetables, and whole grains. Limit processed foods, red meat, and foods high in saturated fat. Some people find that certain foods trigger their symptoms and benefit from keeping a food diary.
Your testing frequency depends on your disease activity and treatment plan. Most people need blood tests every 3 to 6 months to monitor disease activity and check for organ damage. During flares or when starting new medications, you may need more frequent testing. Regular monitoring helps catch problems early before they become serious.
Lupus can complicate pregnancy, but many women with lupus have healthy pregnancies. The best time to get pregnant is when your disease has been quiet for at least 6 months. You need close monitoring by both your rheumatologist and an obstetrician experienced with high-risk pregnancies. Some lupus medications are not safe during pregnancy, so discuss your treatment plan before conceiving.