That persistent back pain you’ve been trying to ignore? The fever that won’t break, the burning sensation that’s getting worse by the hour? These aren’t symptoms you should wait out or try to manage on your own — they could signal a kidney infection that needs immediate attention.
At Complete Care, we understand that kidney infections don’t follow a 9-to-5 schedule, and neither do we. Our emergency-trained physicians are equipped to diagnose and treat kidney infections by using advanced diagnostic tools to confirm the infection, assess its severity, and start you on the appropriate treatment immediately. You’ll receive the same level of expert emergency care at our emergency clinic that you’d find at a hospital ER, but with shorter wait times and a more comfortable, patient-focused environment.
Don’t let a kidney infection progress into something more serious. Visit one of our convenient ER locations around Texas or in Colorado Springs today for fast, professional care that gets you on the road to recovery. We’re open 24/7, ready to help you feel better, faster.
For life-threatening situations, please call 911.
Table of Contents
- What causes kidney infections?
- Kidney infection symptoms
- What does a kidney infection feel like?
- What will the ER do for a kidney infection?
- FAQs
What causes kidney infections?
Kidney infections don’t appear out of nowhere — they typically start as infections in your lower urinary tract that travel upward to one or both kidneys. Understanding what triggers these infections can help you recognize the warning signs and seek treatment before the situation becomes serious.
Most kidney infections develop for one of these reasons:
- A UTI that isn’t treated promptly can allow bacteria to climb from your bladder into your kidneys through the ureters
- E. coli and other bacteria from your digestive tract can enter your urinary system and make their way up to the kidneys
- Kidney stones, an enlarged prostate, or structural abnormalities can trap urine and create an environment where bacteria thrive
- Conditions like diabetes or medications that suppress your immune system make it harder for your body to fight off infections before they spread
Women are particularly susceptible to kidney infections due to their shorter urethras, which give bacteria a quicker route to the bladder and kidneys. Pregnancy, recent urinary procedures, or catheter use can also increase your risk.
The key takeaway? Any urinary symptoms that persist or worsen deserve immediate medical attention to prevent a simple infection from becoming a kidney emergency.
Continue reading: When to go to the ER for kidney stones
Kidney infection symptoms
Kidney infections announce themselves with symptoms that are hard to ignore and shouldn’t be dismissed as “just a bad UTI.” Recognizing the signs of kidney infection early can mean the difference between a quick recovery and serious complications that could require hospitalization.
Watch for these warning signs:
- High fever and chills
- Back or side pain
- Nausea and vomiting
- Urgent, cloudy, and painful urination
- Blood in your urine
Kidney infection symptoms can escalate quickly, and waiting to see if they improve on their own is risky. If you’re experiencing severe back pain with fever, can’t keep fluids down due to vomiting, notice blood in your urine, or feel confused or extremely weak, it’s time to seek emergency care immediately. These could signal that the infection is spreading or that you’re developing sepsis — a life-threatening condition that requires urgent treatment.
What does a kidney infection feel like?
If you’ve never had a kidney infection before, it’s easy to dismiss the early symptoms as something less serious — maybe you pulled a muscle, caught the flu, or are just dealing with a bad bladder infection. But kidney infection symptoms have a distinct feeling that sets them apart from other common ailments, and understanding what to expect can help you recognize when something is seriously wrong.
The experience typically includes:
- Deep, aching flank pain. Unlike muscle soreness that moves when you stretch, flank pain from a kidney infection stays put in your lower back or side, often just below your ribs, and may radiate toward your groin.
- A feverish, flu-like misery. You might feel exhausted, achy all over, and experience waves of chills that make you pile on blankets even when you’re burning up with fever.
- Constant urinary discomfort. Every trip to the bathroom brings a burning sensation, yet you feel like you need to go again almost immediately, even when barely anything comes out.
- Nausea that won’t go away. Your stomach feels unsettled, food sounds unappealing, and you might find yourself running to the bathroom for reasons other than urination.
- A general sense that something is very wrong. Many people describe an overwhelming feeling that this isn’t just a typical infection — your body is telling you it needs help now.
The pain and discomfort from a kidney infection don’t come and go like a tension headache or sore muscles from a workout. It’s persistent, it’s draining, and it typically gets worse rather than better without medical intervention.
If what you’re feeling matches this description, trust your instincts and seek emergency care rather than waiting to see if it improves on its own.
What will the ER do for a kidney infection?
Should I go to the ER for a kidney infection? Absolutely — especially if you’re experiencing severe symptoms like high fever, vomiting, or intense pain. At Complete Care, we treat kidney infections as the medical emergencies they are, with a comprehensive approach designed to stop the infection, relieve your symptoms, and prevent complications.
Here’s what you can expect when you arrive:
Rapid diagnostic testing
We’ll start with a urinalysis to confirm the infection, and we may order blood tests to check if the infection has spread to your bloodstream. Imaging tests like CT scans or ultrasounds help us see if there are underlying issues like kidney stones or blockages.
Immediate IV antibiotics
Once we’ve confirmed you have a kidney infection, we’ll start you on intravenous antibiotics right away to attack the bacteria at its source. This is far more effective than oral antibiotics when you’re dealing with a serious infection.
IV for dehydration and symptom relief
Many patients arrive dehydrated from fever and vomiting, so we’ll administer fluids through an IV to rehydrate you quickly. We’ll also provide medication for pain and nausea so you can start feeling better while the antibiotics do their work.
Monitoring and follow-up care
We’ll track your vital signs and response to treatment, and provide clear instructions for continuing antibiotics at home, along with guidance on when to follow up with your primary care doctor.
If you’re wondering what to do for a UTI and are looking for an over-the-counter medication, please know that a UTI that’s progressed to your kidneys isn’t something you can handle with home remedies. Emergency care ensures you get powerful antibiotics and supportive treatment fast, reducing your risk of kidney damage, sepsis, or the need for hospitalization.
At Complete Care, we’re equipped to handle everything from diagnosis to treatment under one roof, so you can start your recovery without delay.
Kidney infection FAQs
Can a kidney infection go away on its own?
No, kidney infections require antibiotic treatment and won’t resolve without medical intervention. Unlike a mild bladder infection that might occasionally clear up, kidney infections involve deeper tissue and pose too great a risk for complications to leave untreated. Attempting to wait it out could result in permanent kidney damage or a life-threatening bloodstream infection.
How long does it take to recover from a kidney infection?
Most people start feeling significantly better within 48–72 hours after starting antibiotics, though you’ll need to complete the full course (typically 7–14 days) to fully eliminate the infection. Complete recovery, where all symptoms disappear and your energy returns, usually takes about two weeks with proper treatment and rest.
What’s the difference between a UTI and a kidney infection?
A UTI (urinary tract infection) is a general term that can refer to infections anywhere in your urinary system, while a kidney infection specifically means the infection has reached one or both kidneys. Kidney infections are more serious, typically involve fever and back pain, and always require immediate medical treatment, whereas simple bladder infections can sometimes be less urgent.
How fast can a kidney infection kill you?
While most kidney infections respond well to treatment, an untreated infection can become life-threatening within days if it progresses to sepsis — a condition where the infection spreads to your bloodstream. This is why seeking immediate medical care at the first signs of a kidney infection is so critical. With prompt treatment, the vast majority of kidney infections resolve completely without serious complications.
Get kidney infection emergency diagnosis and treatment all under one roof at Complete Care
Kidney infections are serious medical emergencies that require immediate professional treatment — not home remedies, not waiting until Monday for a doctor’s appointment, and definitely not hoping the symptoms will just go away.
At Complete Care, we understand that when you’re dealing with fever, pain, and the exhausting symptoms of a kidney infection, you need help now. While urgent care centers close nightly and may not offer digital imaging or low wait times, a freestanding ER like Complete Care is the best place to go for kidney infection treatment.
If you’re searching for an emergency clinic in Austin, Corpus Christi, Dallas/Fort Worth, East Texas, Lubbock, San Antonio, or Colorado Springs, Complete Care is your partner in fast, effective emergency care. Our freestanding ERs combine the expertise and advanced diagnostic tools of a hospital emergency room with the convenience, comfort, and shorter wait times you deserve when you’re feeling your worst.
We’re open 24 hours a day, 7 days a week, with no appointment necessary. Visit your nearest Complete Care location today and let our emergency-trained team get you on the path to recovery.
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