Which of the following is NOT a symptom of systemic lupus erythematosus (SLE)?

• A. Joint swelling
• B. Skin rashes
• C. Excessive weight gain
• D. Kidney involvement

Answer: (C)

Systemic lupus erythematosus (SLE) is characterized by a wide range of symptoms due to its systemic nature affecting multiple organ systems. Joint swelling is a common symptom, as up to 90% of SLE patients experience arthralgia or arthritis. Skin rashes, particularly the classic butterfly rash, are also well-documented manifestations of the disease. Kidney involvement is significant in SLE, frequently leading to conditions like lupus nephritis, which affects kidney function and health.

Excessive weight gain is not recognized as a direct symptom of SLE. While weight changes can occur with any chronic illness due to factors like medication side effects, metabolic effects, or lifestyle changes, excessive weight gain is not a primary or defining feature of SLE. Thus, it stands apart from the other options that are integral to the clinical presentation of the disease.