The main signs of terminal chronic renal failure include: general weakness and poor work performance, legs and under eyes edemas, getting tired quickly, headache due to hypertension, nausea, vomiting, somnolence, sometimes to coma, unpleasant smell (urine) during respiration, decreases the need to urinate during the day and during the night increases. If you have some of these symptoms contact your doctor urgently.c.