What is Pyelitis?
Pyelitis is an infection or inflammation of the renal pelvis, the part of the kidney that collects urine before it moves to the ureter. It is a type of urinary tract infection affecting the upper urinary system.
What causes Pyelitis?
Pyelitis is mainly caused by bacteria, most commonly Escherichia coli (E. coli), traveling up from the bladder or urethra. Risk factors include urinary tract obstruction, catheter use, poor hygiene, and conditions like diabetes.
What are the symptoms of Pyelitis?
Common symptoms include:
- Fever and chills
- Pain in the lower back or side (flank pain)
- Frequent and painful urination
- Cloudy or foul-smelling urine
- Nausea or vomiting in severe cases
- Feeling generally unwell or tired
How is Pyelitis diagnosed?
Diagnosis involves:
- Reviewing medical history and symptoms
- Urinalysis and urine culture to identify infection
- Blood tests to check for complications
- Imaging tests like ultrasound if obstruction is suspected
How is Pyelitis treated?
Treatment includes:
- Antibiotics targeted to the bacteria found in urine tests
- Pain relief and fever control
- Drinking plenty of fluids
- Hospital care if infection is severe or complicated
- Treating any underlying issues like kidney stones
What is the outlook for someone with Pyelitis?
With prompt treatment, pyelitis usually clears without lasting damage. Untreated infections can lead to serious complications such as kidney damage or sepsis.
How can someone prevent Pyelitis?
Preventive tips include:
- Drinking plenty of water
- Maintaining good personal hygiene
- Urinating when needed without delay
- Managing chronic conditions like diabetes carefully
- Avoiding irritants such as harsh soaps in the genital area
When should I see a doctor?
See a doctor if you experience:
- Fever with flank or abdominal pain
- Symptoms of urinary infection that worsen or don’t improve
- Nausea and vomiting
- Signs of severe illness or confusion


