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What symptoms can appear early in systemic lupus erythematosus?

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In the early stages of systemic lupus erythematosus, individuals often experience constitutional symptoms that serve as the first manifestations of the illness. These include:

Fever1
Weakness1
Fatigability1
Weight loss1

Because systemic lupus is a complex autoimmune disorder, these initial signs are often accompanied by or progress to more specific clinical findings, such as nondeforming arthritis, skin rashes (including the characteristic butterfly-shaped malar rash), photosensitivity, or inflammation of the chest lining (pleurisy) or the heart's membranous sac (pericarditis).21

Identifying the disease early can be challenging because symptoms are frequently ambiguous, fleeting, or similar to those of other conditions. Diagnosis typically requires the presence of specific clinical criteria and the detection of antinuclear antibodies in the blood.21