Renal diseases refer to illnesses and disorders that affect the kidneys and their ability to function properly. There are various synonyms for renal diseases, including kidney disease, nephropathy, renal ailments, renal disorders, kidney dysfunction, renal impairment, and kidney damage. Some of the common causes of renal diseases include diabetes, high blood pressure, and glomerulonephritis. These conditions can result in chronic and progressive damage to the kidneys leading to kidney failure if left untreated. Symptoms of renal diseases may include fatigue, high blood pressure, swelling in the legs or feet, and changes in urination frequency or color. Early diagnosis and treatment are essential for managing renal diseases.