Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease that occurs when the immune system mistakenly attacks the body’s own tissues and organs, causing inflammation that may affect the skin, joints, kidneys, heart, and brain. Symptoms and their severity vary from one person to another and may change over time. One of the most characteristic symptoms of lupus is the “butterfly rash,” which appears across the cheeks and the bridge of the nose. Other common symptoms include joint pain, stiffness or swelling, particularly in the morning, as well as severe fatigue and occasional fever. Some patients may also experience photosensitivity, in which exposure to sunlight can trigger a rash or worsen symptoms. Raynaud’s phenomenon may also occur, causing the fingers or toes to change color, usually becoming white and then blue, in response to cold or stress. The exact cause of lupus remains unknown, but it is believed to involve a combination of genetic, environmental, and hormonal factors. A genetic predisposition may increase the risk of developing the disease, while factors such as ultraviolet radiation, certain medications, and infections may contribute to triggering or worsening disease activity. Lupus is also more common among women, particularly during their reproductive years, suggesting a possible role for hormonal factors. Diagnosis requires a comprehensive assessment that includes a medical history, physical examination, and laboratory tests such as the antinuclear antibody (ANA) test, blood tests, kidney function tests, and urinalysis, depending on the patient’s symptoms and condition. Although there is currently no definitive cure for lupus, treatment aims to control disease activity, relieve symptoms, and prevent complications. Depending on the severity of the disease and the organs affected, treatment may include nonsteroidal anti-inflammatory drugs (NSAIDs), hydroxychloroquine, corticosteroids, and immunosuppressive medications. A healthy lifestyle can also help people manage lupus. Sun protection, regular moderate physical activity, adequate sleep and rest, a balanced diet, and avoiding smoking are important measures that support overall health. Regular medical follow-up and adherence to treatment are essential for controlling the disease and maintaining quality of life. Professor Dr. Ahmed Khudhair Al-Humairi. Al Mustaqbal University The First University in Iraq