Pyelonephritis

**Semantic type:** Disease or Syndrome

**Definition:** An inflammatory process affecting the kidney. The cause is most often bacterial, but may also be fungal in nature. Signs and symptoms may include fever, chills, flank pain, painful and frequent urination, cloudy or bloody urine, and confusion.

**Synonyms:** - Kidney Infection - Kidney Infection - Kidney infection - PYELONEPHRITIS