Final answer:
Tinnitus is not a symptom of acute renal failure; symptoms include oliguria, anuria, and a decline in urine production, among others.
Step-by-step explanation:
The symptom that is NOT a sign of acute renal failure is tinnitus. Acute renal failure (ARF) symptoms typically include oliguria (too little urine output), anuria (the cessation of urine production by the kidney), a sharp decline in the production of urine, and symptoms like metabolic acidosis, fatigue, and uremia. However, tinnitus, which is a ringing or similar sensation of sound in the ears, is not related to kidney function or acute renal failure.
Tinnitus is a condition characterized by a ringing or buzzing sound in the ears, and it is not directly related to kidney function.