What are the signs of having kidney failure?

Few signs/many signs: Many people know they're moving towards renal failure by their lab values alone. But here are some symptoms which can be associated with kidney failure - and many other things as well: unusual fluid retention, mental changes, confusion, foods tasting metallic, nausea/vomiting, exhaustion, anemia, sexual dysfunction.Much depends on the speed of onset; acute and chronic renal failure arent the same.

Renal failure: Nausea, vomiting, decreased appetite, decreased urination and a general ill feeling or weakness

Fatigue swelling etc: Weakness, fatigue, lethargy. Fluid retention & swelling. Shortness of breath. Check out http://www.mayoclinic.org/diseases-conditions/kidney-failure/basics/symptoms/con-20024029 & http://www.medicinenet.com/kidney_failure/article.htm. Go see your family doc for testing and possible referral to a nephrologist (kidney specialist) when appropriate. Control blood pressure & sugar (diabetes).