What can be mistaken for a kidney infection?

Kidney infections (pyelonephritis) are often mistaken for lower UTIs (bladder infections) or kidney stones due to overlapping symptoms like frequent urination, urgency, and burning pain, but kidney infections are more severe, adding fever, chills, nausea, vomiting, and intense back/side pain (flank pain). Other mimickers include STIs, interstitial cystitis, prostatitis (in men), and even conditions like appendicitis or ovarian cysts, requiring medical evaluation for proper diagnosis.

What does UTI feel like in pregnancy?

A UTI during pregnancy often feels like typical UTI symptoms (burning when peeing, frequent urges, cloudy/smelly urine) but can be masked by pregnancy symptoms like frequent urination and pelvic pressure, making it tricky; signs of a more serious kidney infection include fever, chills, back pain (under ribs), nausea, and vomiting, requiring immediate care as untreated UTIs pose risks. 

How to treat kidney infection in kids?

Treating a child's kidney infection (pyelonephritis) involves immediate antibiotics, often 10-14 days, potentially IV if very sick or young (under 2 months), plus lots of fluids and pain relief (acetaminophen/ibuprofen), with close follow-up crucial; don't stop antibiotics early, as severe cases or complications may need hospitalization and further specialist care.
 

How to tell if a UTI or kidney infection?

A UTI (Urinary Tract Infection) causes frequent, painful urination, cloudy/smelly urine, and pelvic pressure, while a kidney infection (which starts as a UTI) adds severe systemic symptoms like fever, chills, nausea, vomiting, and pain in your side or back, signaling a more serious spread that needs urgent care. Think of it as a UTI with added flu-like symptoms and localized back/side pain.
 

Can a kidney infection cause vomiting and diarrhea?

Yes, a kidney infection (pyelonephritis) can absolutely cause vomiting and diarrhea, often alongside flu-like symptoms like fever, chills, back pain, and urinary issues, as the infection triggers systemic inflammation and affects the body's systems, requiring urgent medical attention. 

Common Causes of Kidney and Back Pain

What are signs of sepsis from a kidney infection?

Sepsis from a kidney infection (urosepsis) means your body is severely reacting to the infection, with symptoms like confusion, rapid heart rate/breathing, fever/chills, extreme pain, and clammy skin, requiring immediate care; these signal a progression from typical kidney infection signs (back pain, painful urination, cloudy urine) to a life-threatening emergency.
 

What are the four warning signs of a damaged kidney?

• Urinating more frequently. If you feel the need to urinate more often, especially at night, this can be a sign of kidney disease. ...
• Blood in urine. ...
• Foamy urine. ...
• Persistent puffiness around eyes. ...
• Swollen ankles and feet.

What does the beginning of a kidney infection feel like?

The start of a kidney infection often feels like a worsening urinary tract infection (UTI), with frequent, painful urination, but quickly escalates to flu-like symptoms like fever, chills, fatigue, nausea, vomiting, and intense pain in your lower back, side (under the ribs), or groin, sometimes accompanied by cloudy, foul-smelling, or bloody urine, requiring immediate medical attention as it's a serious condition.
 

How do doctors check for a kidney infection?

Doctors diagnose kidney infections using a combination of your symptoms, a physical exam, and tests like urinalysis (checking urine for bacteria/white blood cells) and urine culture (identifying the specific germ), often supported by blood tests (checking for infection markers) and sometimes imaging (ultrasound/CT scan) to see the kidneys for blockages or damage, with antibiotics prescribed if an infection is found. 

How can I test for a kidney infection at home?

You can't definitively diagnose a kidney infection at home, but you can use over-the-counter urine test strips to check for signs of a Urinary Tract Infection (UTI) like leukocytes (white blood cells) and nitrites, which often precede kidney infections. Brands like AZO or Easy@Home offer strips for this, but for kidney-specific markers (protein, creatinine), more comprehensive kits from LetsGetChecked or Healthy.io are available, though always see a doctor for serious symptoms or positive results.
 

When is a kidney infection an emergency?

Go to the ER for a kidney infection if you have severe symptoms like high fever (over 102°F) with chills, intense back/side pain, uncontrollable vomiting, confusion, dizziness, or signs of dehydration (like not peeing much). These red flags suggest a serious infection that could lead to sepsis or kidney damage, requiring immediate hospital care, often with IV antibiotics, instead of just oral medication.
 

Is kidney infection serious in kids?

Therefore, it is critical that children who have a UTI and fever, especially those under the age of 2, receive prompt medical care to prevent possible permanent kidney damage. Repeat acute kidney infections can ultimately lead to the need for a kidney transplant.

What does a UTI pee look like?

UTI pee often looks cloudy, dark, or even reddish/pink due to blood, and usually has a strong, foul smell, unlike normal clear to light yellow urine; it might also appear dark brown or have blood clots. These changes, combined with symptoms like burning pain when urinating, frequent urges, and lower belly pressure, signal a urinary tract infection.
 

What should you not do during a UTI?

When you have a UTI, don't delay seeing a doctor, skip your full antibiotic course, hold your urine, or drink bladder irritants like caffeine, alcohol, sugary sodas, or acidic juices (citrus). Also, avoid spicy foods, douches, perfumed products, and having sex until it's better, as these can worsen symptoms or hinder healing.
 

Can dehydration cause a UTI?

Yes, dehydration significantly increases your risk of getting a Urinary Tract Infection (UTI) because it reduces urine flow, concentrates urine, and prevents your body from flushing out bacteria, allowing them to multiply and cause infection. Staying well-hydrated with water helps dilute urine and encourages frequent urination, which is key for preventing bacteria from taking hold in the urinary tract, notes Urologic Care and Medrite Urgent Care.
 

Will they admit me for a kidney infection?

Yes, you can be hospitalized for a kidney infection (pyelonephritis), especially if it's severe, you're vulnerable (pregnant, diabetic, immunocompromised), severely dehydrated, unable to keep down fluids/meds, or show signs of complications like sepsis; hospitalization often involves IV antibiotics and fluids for faster, more intensive treatment, say experts at Mayo Clinic, Rush University Medical Center, and the NHS. 

Will a kidney infection show on a urine test?

Yes, a kidney infection will almost always show on a urine test (urinalysis), revealing signs like bacteria, white blood cells (leukocyte esterase), nitrites, blood, and sometimes cloudy urine, confirming a urinary tract infection (UTI) that might be in the kidneys, though further tests like a urine culture or imaging help pinpoint the location and severity. 

What other illnesses mimic kidney infections?

The symptoms of kidney infections, or pyelonephritis, often resemble interstitial cystitis, but the two conditions are not the same. It takes the expert assessment and diagnostic expertise of a urologist to determine if an infection is present in the bladder and if it has spread to the kidneys.

What feels like a kidney infection but isn't?

Interstitial cystitis (IC)/bladder pain syndrome (BPS) is a chronic bladder health issue. It is a feeling of pain and pressure in the bladder area. Along with this pain are lower urinary tract symptoms which have lasted for more than 6 weeks, without having an infection or other clear causes.

What do you do if you feel a kidney infection coming on?

See your GP if you have a fever and persistent tummy, lower back or genital pain, or if you notice a change to your usual pattern of urination. Most kidney infections need prompt treatment with antibiotics to stop the infection from damaging the kidneys or spreading to the bloodstream. You may also need painkillers.

How do they rule out a kidney infection?

To check for a kidney infection, you may be asked to provide a urine sample to test for bacteria, blood or pus in your urine. Your health care provider might also take a blood sample for a culture. A culture is a lab test that checks for bacteria or other organisms in your blood.

How to tell if kidneys are struggling?

Signs your kidneys are struggling often involve changes in urination (more/less frequent, foamy), swelling (hands, feet, face), persistent fatigue, itchy skin, nausea, loss of appetite, trouble sleeping, shortness of breath, or a metallic taste in your mouth, though symptoms can be subtle early on and worsen over time, requiring medical attention for proper diagnosis. 

What are the first signs of kidney stones?

Kidney stones form in the kidneys. Symptoms may start as stones move into the ureters. The ureters are thin tubes that let urine pass from the kidneys to the bladder. Symptoms of kidney stones can include serious pain, upset stomach, vomiting, fever, chills and blood in the urine.

Where is kidney pain in a woman's body?

Kidney pain in females (and anyone) is felt as a dull ache deep in the back, just below the ribs, on one or both sides of the spine, often extending to the abdomen or groin, and it doesn't usually change with movement, unlike typical back pain. Common causes in women include urinary tract infections (UTIs) due to shorter urethras and kidney stones, leading to symptoms like painful or frequent urination, fever, and blood in the urine, requiring prompt medical attention.