Lupus Symptoms:
The Complete Checklist

Lupus earns its reputation as "the great imitator", it can look like dozens of other conditions, and its symptoms vary enormously from person to person. Some patients have mild skin and joint disease. Others have serious kidney or brain involvement. Most fall somewhere in between, with a shifting pattern of flares and remissions.

This guide covers the recognised symptoms of systemic lupus erythematosus (SLE) across every body system. It's designed to help you identify patterns worth discussing with your doctor, not to self-diagnose.

Skin Symptoms

Skin involvement occurs in about 70–80% of lupus patients at some point in their disease. The most recognised feature is:

• Butterfly (malar) rash, a flat or raised rash across both cheeks and the bridge of the nose, shaped like a butterfly. It typically spares the nasolabial folds (the creases around the nose and mouth). Appears in about 50% of lupus patients.
• Photosensitivity, unusual skin reactions to sun exposure (rash, worsening of existing rash, or systemic flare after sun exposure)
• Discoid lupus rash, coin-shaped scarring plaques, often on the scalp, face, or ears. Can cause permanent scarring and hair loss.
• Oral or nasal ulcers, usually painless mouth sores; a recognised criterion for lupus diagnosis
• Hair loss (alopecia), diffuse thinning or patchy hair loss, often one of the first signs of a flare
• Vasculitic rash, small spots or purplish patches from inflammation of small blood vessels

Joint Symptoms

Joint pain occurs in over 90% of lupus patients. Lupus arthritis has some distinctive features:

• Typically affects small joints (hands, wrists) symmetrically, similar distribution to RA
• Usually non-erosive, lupus arthritis generally doesn't destroy joint cartilage the way RA does
• Morning stiffness common
• Joint pain may move between joints (migratory arthralgia)
• Jaccoud's arthropathy, a type of deformable but non-destructive joint deformity in chronic lupus

Fatigue

Fatigue is one of the most common and debilitating symptoms of lupus, reported by up to 90% of patients. Lupus fatigue is:

• Not relieved by rest or sleep
• Often described as a "bone-deep exhaustion"
• Multifactorial, driven by inflammation, anaemia, poor sleep, depression, and sometimes disease activity itself
• One of the primary determinants of quality of life in lupus patients

Kidney Symptoms (Lupus Nephritis)

About 30–50% of lupus patients develop kidney involvement (lupus nephritis). Critically, this is often silent, you may have no symptoms despite significant kidney inflammation. When symptoms do occur:

• Foamy or bubbly urine (protein in the urine)
• Swelling of the legs or ankles (oedema)
• High blood pressure
• Reduced urine output

This is why lupus patients require regular urine and blood testing to monitor kidney function even when they feel well.

Blood Symptoms

Lupus frequently affects blood cells:

• Anaemia, low red cell count; causes tiredness and pallor. Can be from chronic inflammation or from autoimmune destruction of red cells (haemolytic anaemia).
• Leucopenia, low white cell count; can increase infection risk
• Thrombocytopenia, low platelet count; can cause easy bruising or bleeding

Heart and Lung Symptoms

• Pleuritis, inflammation of the lining around the lungs, causing sharp chest pain that worsens with breathing
• Pericarditis, inflammation of the lining around the heart, causing chest pain (often positional)
• Shortness of breath, from pleuritis, pneumonitis, or pulmonary hypertension
• Raynaud's phenomenon, fingers and toes turning white or blue in cold temperatures

Neurological and Brain Symptoms (Neuropsychiatric Lupus)

Lupus can affect the nervous system in various ways, a broad category called neuropsychiatric lupus (NPSLE):

• Brain fog, cognitive difficulty, memory problems, poor concentration
• Headaches, migraines are more common in lupus patients
• Seizures, occur in a minority of patients with active neurological disease
• Psychosis, rare but recognised; can occur with active CNS lupus
• Peripheral neuropathy, tingling, numbness, or weakness in the hands and feet
• Mood disorders, anxiety and depression are significantly more common in lupus

Eye Symptoms

• Dry eyes (secondary Sjögren's syndrome is common in lupus)
• Retinal vasculitis, inflammation of blood vessels in the eye; can affect vision
• Keratoconjunctivitis sicca (dry eye disease)

General (Constitutional) Symptoms

• Fever, low-grade recurring fevers without an obvious infection
• Unexplained weight loss
• Swollen lymph nodes

Preparing for Your Doctor Appointment

If you suspect lupus, tracking your symptoms before your appointment is valuable. Note: which symptoms you have, when they started, whether they come and go, any triggers you've noticed (sun, stress, illness), and how they affect your daily life.