Higher than usual levels of certain waste products in the blood, which can be a sign of kidney problems.

When to seek immediate medical care

See a healthcare professional right away for:

  • Confusion with or without headache.
  • Less or no urination.
  • Chest pain.
  • Fast heartbeat.
  • Feeling the need to take long, deep breaths.
  • Dizziness.
  • Leg swelling.

When to make a doctor's appointment

See a healthcare professional for:

  • Swelling, which may happen in the legs and feet.
  • Tiredness or weakness.
  • Upset stomach or vomiting.
  • Loss of appetite or metallic taste in the mouth.
  • Urine that looks foamy, frothy or bubbly.
  • Pale skin color.
  • Urinating more often than usual.
  • Bone and joint pain.