Lupus is a chronic inflammatory disease that occurs when your body's immune system attacks your own tissues and organs. Inflammation caused by lupus can affect many different body systems — including your joints, skin, kidneys, blood cells, brain, heart and lungs.

Lupus can be difficult to diagnose because its signs and symptoms often mimic those of other ailments. The most distinctive sign of lupus — a facial rash that resembles the wings of a butterfly unfolding across both cheeks — occurs in many but not all cases of lupus.

Some people are born with a tendency toward developing lupus, which may be triggered by infections, certain drugs or even sunlight. While there's no cure for lupus, treatments can help control symptoms.

Symptoms Causes Risk factors Complications

No two cases of lupus are exactly alike. Signs and symptoms may come on suddenly or develop slowly, may be mild or severe, and may be temporary or permanent. Most people with lupus have mild disease characterized by episodes — called flares — when signs and symptoms get worse for a while, then improve or even disappear completely for a time.

The signs and symptoms of lupus that you experience will depend on which body systems are affected by the disease. The most common signs and symptoms include:

  • Fatigue and fever
  • Joint pain, stiffness and swelling
  • Butterfly-shaped rash on the face that covers the cheeks and bridge of the nose
  • Skin lesions that appear or worsen with sun exposure (photosensitivity)
  • Fingers and toes that turn white or blue when exposed to cold or during stressful periods (Raynaud's phenomenon)
  • Shortness of breath
  • Chest pain
  • Dry eyes
  • Headaches, confusion and memory loss

When to see a doctor

See your doctor if you develop an unexplained rash, ongoing fever, persistent aching or fatigue.

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