Lupus nephritis is a condition that affects the kidneys and is caused by systemic lupus erythematosus, an autoimmune disease. Synonyms for lupus nephritis include lupus glomerulonephritis, lupus-related kidney disease, and lupus renal disease. Other terms that may be used to describe this condition include proliferative lupus nephritis, membranous lupus nephritis, and mixed lupus nephritis. It is important for medical professionals and patients to be familiar with these terms as they may be used interchangeably in medical literature and discussions. Timely diagnosis and treatment are crucial for managing lupus nephritis and preventing complications such as kidney failure.