Kidney dysfunction refers to a condition where the kidneys are unable to filter waste and excess fluids from the blood effectively. This can lead to a buildup of toxins in the body, causing various health issues. Common causes include diabetes, high blood pressure, and certain medications. Symptoms of kidney dysfunction may include fatigue, swelling in the legs or ankles, and changes in urine output. Early detection is crucial, as it can help prevent further damage. Treatment options vary and may include lifestyle changes, medications, or dialysis, depending on the severity of the condition and the underlying cause.