Lupus is a chronic autoimmune disease in which the immune system attacks the body’s own healthy tissues and organs. Selena Gomez has lived publicly with systemic lupus erythematosus (SLE), the most common and serious form, since revealing her diagnosis in 2015. Her experience, including a kidney transplant and chemotherapy, has become one of the most visible examples of what lupus looks like in real life.
How Lupus Works in the Body
In a healthy immune system, white blood cells target bacteria, viruses, and other invaders. In lupus, that system loses the ability to tell the difference between foreign threats and the body’s own tissue. Genetic, hormonal, and environmental factors combine to trigger this breakdown, causing the immune system to produce antibodies that attack healthy cells instead of protecting them.
These self-targeting antibodies cause damage through inflammation, and they can affect virtually any organ. They form clusters called immune complexes that deposit in tissues, activating the body’s inflammatory response and destroying healthy cells over time. This is why lupus can look so different from person to person: one patient might deal primarily with joint pain, while another faces kidney failure or neurological problems.
Who Gets Lupus
An estimated 204,000 people in the United States have SLE, and about 184,000 of them are women. Nine out of every ten people with lupus are female. The disease disproportionately affects Black, Hispanic, Asian, and American Indian and Alaska Native populations. Black and American Indian/Alaska Native women are two to three times more likely than white women to develop lupus. Most people are diagnosed during their childbearing years, between their late teens and mid-40s.
Common Symptoms
More than 90% of people with lupus experience constitutional symptoms like fatigue, fever, appetite loss, and unintentional weight changes, often as their very first sign of the disease. These symptoms are easy to dismiss or attribute to stress, which is one reason lupus is notoriously difficult to diagnose.
Over 80% of patients develop skin involvement. The most recognizable is the butterfly rash, a raised, red rash that spreads across the cheeks and bridge of the nose. Between 80% and 90% of patients experience joint problems at some point, typically a symmetrical inflammatory arthritis affecting the small joints of the hands, wrists, and knees.
Lupus can also attack the kidneys (lupus nephritis), the lining of the lungs, the heart, and the brain. Neuropsychiatric lupus causes confusion, memory problems, difficulty concentrating (often called lupus brain fog), headaches, depression, and anxiety. In severe cases, it can trigger seizures or psychosis.
How Selena Gomez’s Lupus Unfolded
Gomez began sharing her experience publicly in 2015, documenting through interviews and social media how the disease affected her daily life. Lupus is a relapsing condition, meaning symptoms flare and then partially or fully subside, only to return. For Gomez, the disease progressed to one of its most serious complications: kidney failure.
In 2017, she revealed that lupus had damaged her kidneys severely enough to require a transplant. Her close friend Francia Raisa donated a kidney. Lupus nephritis, the form of kidney inflammation caused by the disease, is one of the most dangerous complications of SLE. When immune complexes deposit in the kidneys, they can gradually destroy the organ’s filtering ability, eventually leading to end-stage kidney failure if untreated.
Gomez also underwent chemotherapy, which surprises people who associate chemo exclusively with cancer. In lupus, certain chemotherapy drugs work by depleting the overactive immune cells (both B cells and T cells) that are producing the harmful antibodies. This approach became a standard treatment for severe kidney involvement because of its ability to slow progression toward kidney failure. It is also used for serious neurological complications of lupus.
What Triggers Flares
Lupus flares can be unpredictable, but several environmental factors are known to play a role. Ultraviolet light from the sun is one of the most well-established triggers and can worsen skin symptoms and overall disease activity. Smoking stimulates the immune system in ways that promote autoimmunity, and current smokers with lupus are significantly more likely to have elevated levels of harmful antibodies compared to those who never smoked.
Diet also matters. Low intake of omega-3 fatty acids and high carbohydrate consumption have been linked to increased disease activity. High coffee intake (roughly more than one large cup per day) has been associated with elevated inflammation markers. Stress, infections, and hormonal changes can all spark flares as well, making day-to-day management a constant balancing act.
How Lupus Is Diagnosed
There is no single test for lupus. Doctors use a combination of blood work and clinical signs, following a classification system that assigns weighted points across ten domains: seven clinical (including skin, kidney, joint, neurological, and blood-related symptoms) and three immunological (specific antibody markers and complement protein levels). A positive antinuclear antibody (ANA) blood test is the required starting point, though a positive ANA alone does not confirm lupus since it appears in other conditions and even in some healthy people. Patients who accumulate enough points across these domains receive a formal classification.
This complexity is why the average lupus diagnosis takes years. Symptoms overlap with dozens of other conditions, and they come and go, making it easy for early signs to be missed or misattributed.
Long-Term Outlook
The prognosis for lupus has improved dramatically over the past few decades. For people diagnosed before age 50, the ten-year survival rate is nearly 98%. Even for those diagnosed at 50 or older, ten-year survival is close to 90%. The most common cause of death within ten years differs by age group: younger patients are more likely to die from lupus-related organ damage, while older patients face higher risks from cardiovascular disease and infection.
Lupus remains a lifelong condition with no cure. Management focuses on controlling inflammation, preventing flares, and protecting vulnerable organs. Many people with lupus live full lives, but the disease requires ongoing monitoring and adaptation.
Gomez’s Role in Lupus Awareness
Before Gomez went public, lupus received relatively little mainstream attention despite affecting hundreds of thousands of Americans. Her willingness to discuss chemotherapy, organ transplant, and the mental health toll of chronic illness gave the disease a level of visibility it had rarely had. She established the Selena Gomez Fund for Lupus Research at the Keck School of Medicine at USC, funding pilot research focused on treating complications of the disease. For a condition that disproportionately affects young women of color, having a high-profile Latina advocate has been particularly significant in reaching communities most affected.