Edema is characterized by the accumulation of excess fluid in bodily tissues, leading to swelling, typically in the hands, feet, ankles, or legs. In individuals with kidney disease, edema frequently results from fluid retention, as the kidneys are unable to effectively eliminate excess water and sodium. Dialysis plays a critical role in managing edema by removing excess fluid from the bloodstream; however, it is important to consistently monitor and manage fluid intake limits to prevent swelling.