
Kidney infections are a type of urinary tract infection (UTI) that can have serious complications if left untreated. While many cases can be treated at home with oral antibiotics, hospitalization may be needed for especially severe cases. If you are on oral antibiotics at home, be sure to take them as prescribed and finish the entire course. If you develop concerning symptoms, seek prompt medical care. In this article, we will discuss the symptoms of kidney infections, when to seek medical attention, and what to expect if hospitalization is required.
| Characteristics | Values |
|---|---|
| Symptoms | Dull, aching pain in your back, side, or stomach, urgent and painful urination, fever, and chills |
| Causes | Bacteria in the urinary tract, cystitis, kidney stones, weakened immune system |
| Treatment | Antibiotics, painkillers, drinking fluids, rest |
| Severity | Can lead to kidney damage, kidney failure, sepsis, organ failure, and death |
| Hospitalization | Severe cases, underlying problems, pregnancy, children |
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What You'll Learn
- Kidney infections are usually treated with antibiotics and painkillers
- A kidney infection can cause kidney damage or scarring
- Urinary tract infections (UTIs) are a common type of infection, especially in females
- Sepsis is a body-wide blood-borne infection that requires immediate medical attention
- Kidney infections can be caused by cystitis, kidney stones, or a weakened immune system

Kidney infections are usually treated with antibiotics and painkillers
Kidney infections are a serious health condition that requires timely care. They are usually treated with antibiotics and painkillers, but in some cases, hospitalisation is necessary.
Kidney infections are a type of urinary tract infection (UTI) that usually moves from the bladder to the kidneys. They are often caused by cystitis, another type of UTI, but it is also possible to have a kidney infection without having cystitis. Bacteria are the most common cause of kidney infections, and they can lead to potentially serious complications if left untreated. For example, untreated kidney infections can cause kidney damage or scarring, resulting in poor kidney function or even kidney failure. Additionally, kidney infections can lead to sepsis, a body-wide blood-borne infection that can be life-threatening if not treated promptly.
Due to the serious nature of kidney infections, it is important to seek medical care if you are experiencing symptoms. Symptoms of a kidney infection include a dull, aching pain in the back, side, or stomach, urgent and painful urination, fever, and chills. If you are experiencing these symptoms, it is recommended to see a doctor as soon as possible.
Once diagnosed with a kidney infection, the standard treatment is a course of antibiotics. Antibiotics are medications that can kill bacteria or slow their growth. It is important to take the full course of antibiotics, even if you start to feel better before completing it. In addition to antibiotics, painkillers such as paracetamol can be taken to help relieve symptoms of pain and a high temperature. However, it is important to note that anti-inflammatory painkillers (NSAIDs) like ibuprofen are not typically recommended for kidney infections as they may increase the risk of further kidney problems.
In some cases, a kidney infection may require hospitalisation. This is more likely if the patient is very sick, has infections in other parts of the body, or has an underlying condition that affects kidney function. Hospital treatment for kidney infections typically involves administering antibiotics and fluids through an intravenous (IV) drip. Patients will also undergo regular blood and urine tests to monitor their health and the effectiveness of the antibiotics.
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A kidney infection can cause kidney damage or scarring
Kidney infections are a type of urinary tract infection (UTI) caused by bacteria or viruses in the kidneys. They are considered serious and should be treated right away. The bacteria or viruses that cause kidney infections usually come from another part of the urinary tract, such as the bladder, ureters, or urethra, and spread to the kidneys. Less commonly, the bacteria or viruses come from an infection elsewhere in the body.
Kidney infections can cause potentially serious complications if left untreated. One of the main complications of an untreated kidney infection is kidney damage or scarring. When this happens, the kidneys may not function properly, and the person may develop chronic kidney disease. The kidneys work to filter waste products from the blood. If a kidney infection damages the blood vessels supplying the kidneys, it can lead to high blood pressure.
Serious damage from a kidney infection can cause kidney failure, which can be fatal. In rare cases, a kidney infection can cause a severe infection called emphysematous pyelonephritis (EPN), where the tissues of the kidneys are rapidly destroyed, and the bacteria release toxic gas, which builds up inside the kidneys. This condition usually requires emergency surgery to remove some or all of the affected kidney.
It is important to seek prompt medical care if you develop symptoms of a kidney infection, such as a dull, aching pain in the back, side, or stomach, urgent and painful urination, fever, and chills. Most kidney infections require timely treatment with antibiotics to prevent damage to the kidneys or the spread of infection to other parts of the body. Hospitalization may be necessary for severe cases, where intravenous (IV) antibiotics and fluids are administered.
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Urinary tract infections (UTIs) are a common type of infection, especially in females
UTIs are bacterial infections of the urinary system. The urinary system includes the kidneys, ureters, bladder, and urethra. Most UTIs affect the urethra or the bladder. However, if the infection spreads to the kidneys, it can become much more serious and may require hospitalisation.
Bacteria, especially E. coli, are the most common cause of UTIs. E. coli can easily spread to the urethra, particularly in women, due to poor hygiene habits and the close proximity of the urethral opening to the anus. Other risk factors for developing a UTI include female gender, a prior UTI, sexual activity, vaginal infection, diabetes, obesity, genetic susceptibility, and older age.
The symptoms of a UTI include needing to pee often, pain while peeing, and pain in the side or lower back. With many UTIs, symptoms are mild and may pass without medical intervention. However, it is important to seek medical attention if symptoms persist or worsen, as untreated UTIs can lead to serious complications.
If a UTI spreads to the kidneys, it can cause kidney damage or scarring, which can lead to chronic kidney disease. Kidney infections can also lead to high blood pressure and, in rare cases, kidney failure. In addition, untreated UTIs can lead to sepsis, a body-wide blood-borne infection that can be life-threatening. Therefore, it is important to seek prompt medical care if you are experiencing symptoms of a UTI or kidney infection.
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Sepsis is a body-wide blood-borne infection that requires immediate medical attention
Kidney infections are a type of urinary tract infection (UTI) that can be caused by bacteria in the tube that carries urine out of the body (urethra). Kidney infections can be serious and require timely care so they don't cause complications. If left untreated, the kidneys may become scarred and function poorly, and in some cases, a kidney infection will require treatment in a hospital.
One of the main complications of an untreated kidney infection is kidney damage or scarring, which can lead to chronic kidney disease. If a kidney infection damages the blood vessels supplying the kidneys, it can result in high blood pressure.
In some cases, a kidney infection can lead to sepsis, a body-wide blood-borne infection that requires immediate medical attention. Sepsis is a life-threatening condition that happens when the body's immune system has an extreme response to an infection, causing organ dysfunction. The body's reaction causes damage to its own tissues and organs and can lead to septic shock, multiple organ failure, and sometimes death, especially if not recognized early and treated promptly. Sepsis patients with resistant pathogens have been found to have a higher risk of hospital mortality.
The symptoms of sepsis include fever, fast heart rate, rapid breathing, confusion, and body pain. It can be prevented by treating infections early and through good hygiene at home and in healthcare settings. If you think you may have sepsis, seek medical care right away.
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Kidney infections can be caused by cystitis, kidney stones, or a weakened immune system
Kidney infections can be serious and require timely care to prevent complications. In some cases, a kidney infection will require treatment in a hospital, where antibiotics and fluids will be administered intravenously. Symptoms of a kidney infection include a dull, aching pain in the back, side, or stomach, urgent and painful urination, fever, and chills.
Kidney stones can also cause kidney infections. Struvite stones, caused by UTIs, can grow very large and block the kidney, ureter, or bladder. Calcium stones, the most common type, tend to affect more men than women, and people in their twenties. Dehydration and not consuming enough fluids can contribute to stone formation.
A weakened immune system can also lead to kidney infections. Abnormal reactions in the immune system can result in increased production and decreased clearance of proinflammatory cytokines, which can lead to inflammation and cardiovascular disease.
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Frequently asked questions
Symptoms of a kidney infection include a dull, aching pain in the back, side, or stomach, urgent and painful urination, fever, and chills.
If you are experiencing symptoms of a kidney infection, seek prompt medical care. Kidney infections are serious and can lead to potentially life-threatening complications like kidney failure and sepsis if left untreated. Your doctor may refer you to the hospital if you have an underlying problem with your urinary tract, are especially vulnerable to the effects of an infection, or if your symptoms do not respond to treatment with antibiotics.
In a hospital, kidney infections are typically treated with antibiotics and fluids through an intravenous (IV) injection or infusion.











































