Living With Arthritis
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Lupus symptoms

Systemic lupus erythematosus (SLE) is an autoimmune condition that can affect joints, skin, kidneys, blood, and other organs. Symptoms come and go in flares and remissions. This page is the NHS-pathway checklist; the library note at /library/lupus-symptoms explains the same signs in more narrative detail.

Common symptoms of lupus

  • Joint pain and swelling, often in the hands, wrists, and knees
  • Persistent fatigue
  • Butterfly-shaped rash across the cheeks and nose, or sun-triggered rashes
  • Hair thinning
  • Mouth or nose ulcers
  • Fevers, chest pain, or kidney involvement during flares

When to see your GP

See your GP if you have persistent unexplained fatigue, joint pain, rashes — particularly sun-triggered — or recurrent mouth ulcers. Blood tests can screen for lupus.

How lupus symptoms differ from rheumatoid arthritis

Both SLE and RA can swell the small joints of the hands. RA is typically more persistent, symmetrical and damaging to cartilage if untreated. Lupus joint pain often flits between joints, may be less destructive, and almost always travels with extra-articular clues — a sun-triggered rash, mouth ulcers, hair loss, low white cells, or urine changes. Telling your GP about those extras is what stops the story being filed as 'possible RA' or 'viral illness' for another six months.

Photosensitivity on ordinary UK days

UV can trigger both skin and systemic flares. You do not need a Mediterranean holiday: a bright March day, a conservatory, or fluorescent lighting can be enough for some people. A rash that appears after gardening or a lunchtime walk, then fades, is worth mentioning. Daily SPF 50, a wide-brimmed hat and UV-protective clothing are clinical advice from Lupus UK, not vanity.

Kidney and chest clues you should not ignore

Foamy or pink urine, new ankle swelling, or rising blood pressure can be lupus nephritis and need prompt blood and urine tests. Chest pain that is worse on inspiration can be pleurisy or pericarditis. These are not 'wait and see' symptoms if you already have a lupus diagnosis — contact your rheumatology advice line the same day. If you are not yet diagnosed, take them to a GP urgently rather than waiting for a routine slot.

Tests that help a UK diagnosis

A GP can start FBC, U&E, LFT, urine protein, ESR/CRP and ANA. Rheumatology may add anti-dsDNA, ENA, complement and antiphospholipid antibodies. A positive ANA alone is not a diagnosis; a matching clinical picture is. Keep a photograph of the rash and a two-week fatigue/joint diary for the first specialist letter.

This is general information, not a substitute for personalised medical advice.

Frequently asked questions

What are the first signs of lupus in the UK?

People often notice extreme fatigue, flitting joint pain in the hands or knees, a rash after sun, mouth ulcers, or hair thinning before anyone says the word lupus. A butterfly-shaped rash across the cheeks is classic but not required. See a GP if several of these last more than a few weeks.

How is lupus diagnosed on the NHS?

There is no single test. A GP can start blood count, kidney tests, urine protein and an ANA screen, then refer to rheumatology. Specialists may add anti-dsDNA, ENA, complement and antiphospholipid antibodies. A positive ANA alone does not mean you have SLE.

Can lupus symptoms come and go?

Yes. SLE runs in flares and quieter spells. UV light, infection and some medicines can trigger flares. A short diary of energy, rash, joints and urine changes helps your rheumatology nurse see the pattern between appointments.

When should I see a GP about lupus symptoms?

Book if unexplained fatigue, sun-triggered rashes, joint swelling or recurrent mouth ulcers persist. Seek same-day care for severe chest pain, confusion, very little urine with swelling, or a high fever while on immunosuppressants.

Is lupus the same as rheumatoid arthritis?

No. Both can swell small joints, but lupus more often adds rashes, photosensitivity, mouth ulcers or kidney clues. RA is typically more persistently destructive to joints if untreated. The treatments overlap only in part — hydroxychloroquine is the SLE mainstay.