Kidney inflammation, called “pyelonephritis” in the medical literature, is the inflammation of the kidney tissue, usually as a result of a bacterial infection. In most cases the infection starts in the lower urinary tract and, over time, progresses upward to reach the kidneys. When not treated early, permanent damage can develop in the kidney tissue and lead to serious systemic complications.
The disease mostly appears with sudden and pronounced complaints. The most common symptoms are:
- High fever
- Chills and shivering
- Pain in the lower back and flank
- Burning and stinging when urinating
- Nausea, vomiting and marked fatigue
Kidney inflammation is more common in women. The main reason for this is that the urinary canal is shorter in women and bacteria can reach the bladder more easily. When it occurs in men, an underlying additional problem (such as prostate enlargement, urinary tract stones or obstruction) should usually be investigated.
The most important step in treatment is starting appropriate antibiotic therapy at an early stage. In some patients, depending on the severity of the infection, hospitalization and intravenous treatment may be required.
When treatment is delayed or the infection cannot be brought under control, serious complications may develop:
- A permanent decrease in kidney functions
- Kidney failure
- The infection spreading into the blood (sepsis)
In recurrent kidney infections, the underlying cause must always be investigated in detail. Urinary tract stones, vesicoureteral reflux or anatomical disorders can set the stage for this condition.
Frequently Asked Questions
Is kidney inflammation (pyelonephritis) a serious disease?
Yes. Especially when untreated, it can damage the kidney tissue and lead to permanent loss of function. In advanced cases it can turn into life-threatening infections.
Does kidney inflammation go away on its own?
No. A kidney infection does not resolve on its own. Antibiotic treatment is definitely required. If left untreated, the infection progresses and the risk of complications increases.
How is kidney inflammation recognized?
High fever, lower back pain, burning when urinating and general fatigue are the most typical symptoms. When these complaints occur together, the suspicion of pyelonephritis increases.
Is treatment at home possible?
No. At home, only supportive measures (fluid intake, rest) can be applied, but the main treatment must always be carried out with antibiotics under a physician’s supervision.
Does kidney inflammation recur?
Yes, the risk of recurrence is high, especially if there is an underlying cause. Stone disease, reflux or conditions that impair urine flow can lead to recurrent infection.
Why is it more common in women?
The shorter urinary canal in women and the easier access of bacteria to the bladder increase the risk of infection. In addition, sexual activity and hygiene factors can also play a role.
Why is kidney inflammation important in men?
In men, pyelonephritis is usually associated with an underlying obstruction or prostate problem. For this reason, a detailed examination is required.
Does kidney inflammation cause fever?
Yes. High fever and shivering are among the most important systemic signs of a kidney infection.
When should one consult a doctor?
If there is lower back pain, a urinary complaint or marked fatigue along with a high fever, a medical evaluation should be carried out without delay.
