Lupus SLE overview

Overview

Lupus (systemic lupus erythematosus, or SLE) is a long-term condition where your immune system mistakenly attacks healthy parts of your body, causing inflammation and damage in places like your skin, joints, kidneys, heart, and lungs. Think of it like your body's defence system getting confused and fighting against itself.

Lupus is not very common. It affects about 1 in 1,000 people in the UK and other Western countries. It is considered a rare condition.

Lupus can affect anyone, but it is much more common in women – about 9 out of 10 people with lupus are women. It often starts between the ages of 15 and 45. It is also more common in people of African, Caribbean, Asian, and Hispanic background.

Symptoms

Common symptoms

• Joint pain and swelling, especially in the hands, wrists, and knees
• Feeling very tired (fatigue) even after rest
• A butterfly-shaped rash across the cheeks and nose
• Skin rashes that get worse with sunlight
• Hair loss
• Mouth or nose ulcers
• Fever with no other cause
• Swelling in the legs or around the eyes

Symptoms in children

• Lupus in children is rare but can be more severe. Children may have the same symptoms as adults, but also growth problems, delayed puberty, and more frequent kidney involvement.

Symptoms in older adults

• When lupus starts after age 50, it may be milder, with more joint pain and fatigue. Skin rashes and organ problems are less common. It can be harder to diagnose because symptoms are similar to other age-related conditions.

Causes

Main causes

• The exact cause is not known. Lupus is thought to be due to a mix of genetic factors (some people are born more likely to get it) and triggers in the environment that start the immune system attacking the body.
• Your immune system produces antibodies (proteins that normally fight germs) that mistakenly target your own tissues. This leads to inflammation and damage.

Risk factors

• Being female is the biggest risk factor.
• Family history – having a close relative with lupus or other autoimmune diseases increases your risk slightly.
• Certain ethnic backgrounds – African, Caribbean, Asian, and Hispanic people are more likely to develop lupus.
• Sunlight and ultraviolet light exposure can trigger symptoms in some people.
• Some infections, like the Epstein-Barr virus, may act as a trigger.

When to see a doctor

See a doctor urgently if:

• If you have any of the emergency or urgent symptoms listed above.
• If you have a new rash that keeps getting worse, especially after sun exposure.
• If you have persistent joint pain or swelling that stops you from doing daily activities.

Book a routine appointment if:

• See your regular healthcare provider if you have been feeling very tired for weeks, have unexplained fevers, or keep getting mouth ulcers.
• If you notice a butterfly rash on your face, make an appointment to discuss it.
• If you have a family history of lupus and develop symptoms.

Diagnosis

There is no single test for lupus. A doctor (often a rheumatologist – a joint and autoimmune specialist) will take a detailed history, do a physical exam, and do blood and urine tests. Diagnosis is based on a combination of symptoms and test results.

Tests that may be done

• Blood tests – for antibodies (like ANA – antinuclear antibody) and signs of inflammation (ESR, CRP). A positive ANA is common in lupus, but not everyone with a positive ANA has lupus.
• Urine tests – to check for protein or blood, which can indicate kidney involvement.
• Sometimes a skin or kidney biopsy (taking a tiny sample) is needed to confirm the diagnosis.

What to expect at your appointment

Diagnosis can take time because symptoms vary. Your doctor may refer you to a specialist. After diagnosis, you will be seen regularly to monitor the condition and manage symptoms. Most people with lupus learn to recognise when a flare is starting and can get help early.

Treatment

Treatment for lupus aims to control symptoms, reduce inflammation, prevent flares, and protect organs. It is tailored to each person because lupus affects everyone differently. Your care team will work with you to find the best plan.

Self-care at home

• Protect your skin from the sun: wear sunscreen, hats, and long sleeves, and avoid peak UV hours.
• Get plenty of rest and listen to your body – don't push through fatigue.
• Manage stress with relaxation techniques, talking to friends, or counselling.
• Stay active with gentle exercise like walking or swimming, but rest when you need to.
• Eat a balanced diet and stay hydrated.

Medical treatments

Doctors use a range of medicines to manage lupus. These may include anti-inflammatory drugs to reduce pain and swelling, antimalarial drugs (originally for malaria but helpful in lupus), steroids to quickly control inflammation, and medicines that calm the immune system down (immunosuppressants). Treatment is tailored to your symptoms and organ involvement. Always take medications exactly as prescribed and discuss any side effects with your doctor.

When is surgery considered?

Surgery is not a treatment for lupus itself. However, people with lupus may need surgery for complications like joint damage or kidney problems. Always tell your surgeon you have lupus so they can plan your care safely.

Living with this condition

Living with lupus means managing a chronic condition that can change from day to day. Most people learn to pace themselves – doing more on good days and resting on bad days. Keeping a symptom diary can help you and your doctor spot patterns and triggers.

Lifestyle tips

• Sun protection is essential – sunlight can trigger flares.
• Build a support network of family, friends, and healthcare professionals.
• Plan ahead for busy days – break tasks into small steps.
• Talk to your employer about flexible work if needed – many people with lupus continue to work successfully with adjustments.
• Avoid smoking and limit alcohol.

Diet and exercise

A balanced diet with plenty of fruits, vegetables, whole grains, and lean protein is good for overall health. There is no special lupus diet, but some people find certain foods (like garlic or alfalfa sprouts) trigger symptoms. Gentle exercise like yoga, swimming, or walking helps keep joints flexible and improves mood. Avoid high-impact activities during flares.

Mental health and emotional wellbeing

Living with a chronic illness can be emotionally challenging. You may feel anxious, sad, or frustrated, especially during flares. It is important to talk to your doctor about your feelings – they can offer support, refer you to a counsellor, or suggest a support group. You are not alone, and getting help is a sign of strength.

Prevention

Lupus cannot be prevented because its exact causes are not fully understood. However, you can reduce the chance of flares by avoiding known triggers like too much sun, stress, and infections. Early diagnosis and treatment can also help prevent serious complications.

Vaccines

Vaccines are generally safe for people with lupus, but some (like live vaccines) may not be recommended if you are on strong immune-suppressing medicines. Talk to your doctor before getting any vaccine. The flu vaccine and pneumonia vaccine are often recommended. Always check with your rheumatologist.

Screening programmes

There is no routine screening for lupus in the general population. If you have a family history or symptoms that concern you, speak to your doctor. Women with lupus may need extra monitoring during pregnancy.

Complications

If left untreated

• Kidney damage (lupus nephritis) – can lead to kidney failure if not treated.
• Heart and lung problems – inflammation of the lining of the heart (pericarditis) or lungs (pleuritis).
• Blood clots – lupus increases the risk of clots in the legs or lungs.
• Anaemia (low red blood cells) and other blood disorders.
• Brain or nervous system problems – headaches, memory issues, or seizures.

Long-term outlook

With today's treatments, most people with lupus live long, full lives. The condition is different for everyone – some have mild symptoms, while others have more serious flares. Working closely with your healthcare team, avoiding triggers, and taking medications as prescribed can help you manage lupus well. Research is ongoing, and new treatments continue to improve outcomes. It is important to stay hopeful and proactive about your health.

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