Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Renal failureUpdated: 2017-06-13OverviewIn renal failure, the kidneys lose the ability to remove waste and balance fluids and certain substances in the body.SymptomsSymptoms include fatigue, breath odor or a metallic taste in the mouth, and bruising easily.TreatmentsTreatment may include diet changes, medication, and possibly external filtering of the blood (dialysis) or a kidney transplant. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use