You know your kidneys might hurt if you feel a dull ache in your back or side, under your ribs, that doesn't change much with movement, often accompanied by fever, nausea, painful or frequent urination, and cloudy/bloody pee, signaling issues like kidney stones or infection. Unlike muscle pain that worsens with movement, kidney pain feels deep and constant, sometimes spreading to your groin, requiring immediate medical attention if severe or with fever.
To relieve pregnancy kidney pain, prioritize hydration, use pregnancy-safe pain relievers like acetaminophen as directed by your doctor, apply a heating pad, get rest, and wear loose clothing, but always consult your doctor first for severe pain, fever, or vomiting, as it could signal a kidney infection or stones needing specific treatment like antibiotics or procedures.
Three key early warning signs of kidney problems are changes in urination (more or less frequent, especially at night), foamy or bloody urine, and persistent swelling, particularly around the eyes, feet, or ankles, indicating fluid retention. Other common signs include persistent fatigue, nausea, itching, and loss of appetite, as toxins build up when kidneys aren't filtering effectively.
Kidney pain is usually higher up in the back (under the ribs), feels deeper, is constant, and often comes with fever, nausea, or urinary changes, while muscular back pain is typically lower, worsens with movement (bending, twisting), and improves with rest, but if you have severe symptoms like fever, vomiting, or blood in urine with back pain, see a doctor immediately as it could be kidney-related.
Symptoms of a kidney infection may include fever and chills, frequent or painful urination, and nausea or vomiting. Children younger than age 2 years with a kidney infection may only have a high fever.
Symptoms of a kidney infection
Conditions that can mimic kidney stone pain
You feel kidney pain near the middle of your back, just under your ribcage, on each side of your spine where your kidneys are. Your kidneys are part of the urinary tract, the organs that make and remove urine from the body. (pee). You may feel kidney pain on one or both sides of your back.
Organ-related back pain also tends to be achy and generalized, while muscular pain is typically sharp and more specific. It's worth noting that organ problems are often accompanied by other symptoms, such as nausea, fatigue, frequent urination, jaundice, and abdominal pain.
Early signs of kidney disease often involve subtle changes like foamy urine, increased nighttime urination, swelling (puffy eyes, ankles), persistent fatigue, loss of appetite, nausea, itching, and shortness of breath, though many symptoms only appear as kidney function declines. High blood pressure can also be both a cause and an early indicator, and some damage may only be detected through lab tests, even with no noticeable symptoms in the earliest stages (Stage 1).
Diabetes and high blood pressure are the top culprits damaging kidneys most, as they harm the delicate filtering blood vessels, leading to chronic kidney disease (CKD) and failure; other major factors include smoking, obesity, dehydration, poor diet (high sugar/salt/red meat), certain medications (NSAIDs), lack of sleep, and genetic conditions. These factors create a cycle where damaged kidneys worsen blood pressure, further damaging them.
Eye Puffiness
This can make it look like you have bags under your eyes. Edema (fluid buildup) due to kidney disease is often associated with swelling in the hands, feet, and lower legs. However, fluid can also collect around your eyes, making them look puffy and swollen.
You should see a nephrologist if you have any symptoms of kidney disease. These symptoms may include: Changes in your pee: Changes in your peeing habits or how your pee looks may indicate a problem with your kidneys. Signs may include peeing more often or less often, foamy pee or pee that's darker in color.
See your doctor immediately or go to your local hospital emergency department if you have kidney pain and: you have a fever or feel very unwell. you are unable to pass urine. the pain is on both sides of your body.
Place a heating pad on your back, abdomen or side to help reduce kidney pain. Take pain relievers. To ease fever or discomfort, take over-the-counter pain relievers, such as acetaminophen or ibuprofen (unless you have known liver or kidney damage and are not supposed to use these medications).
Kidney infections are a type of urinary tract infection that usually moves from your bladder to your kidneys. Bacteria are the most common cause. Symptoms include fever, trouble peeing, lower back pain and pain when you pee. Kidney infections are treated with antibiotics.
In general, you should seek immediate medical care if you experience lower back pain that: Comes on after a traumatic injury, such as a car accident. Develops suddenly and severely. Is accompanied by other red-flag symptoms.
Visceral pain might be your body telling you that you have an injury, infection or condition that's affecting one of your visceral organs — your heart, lungs, bladder or reproductive system and digestive system organs. The pain usually feels dull, deep down and spread out.
The "Big 3" for lower back pain, developed by spine biomechanics expert Dr. Stuart McGill, are core-stabilizing exercises: the Curl-Up, Side Plank (Side Bridge), and Bird-Dog, designed to build core strength and endurance without excessive spinal stress, helping reduce pain and improve function. They focus on creating a stable "spine bridge" by engaging abdominals, obliques, and back muscles to protect the spine during movement.
You know your kidneys might hurt if you feel a deep, dull ache in your back or side, under the ribs, that doesn't improve with movement, often accompanied by nausea, fever, chills, painful/frequent urination, or changes in urine (cloudy, bloody). Unlike back pain, kidney pain is typically deep, constant, and not relieved by shifting or resting, potentially spreading to the groin, especially with stones or infection, and warrants a doctor's visit.
Pain associated with the kidneys on the other hand generally remains dull and stable and is usually not changed with movement. Kidney pain also does not typically get better on its own, unless that pain is from kidney stones.
And as kidney disease progresses, you may notice the following symptoms. Nausea and vomiting, muscle cramps, loss of appetite, swelling via feet and ankles, dry, itchy skin, shortness of breath, trouble sleeping, urinating either too much or too little.
The main test for kidney disease is a blood test. The test measures the levels of a waste product called creatinine in your blood. A doctor uses your blood test results, plus your age, size, and gender to calculate how many millilitres of waste your kidneys should be able to filter in a minute.
Kidney pain is usually deeper, higher up under the ribs on the sides (flank), constant, and may come with fever, chills, nausea, or urinary changes; while general back pain is often lower, more superficial (muscles/spine), changes with movement, and may improve with rest, but watch for radiating pain down the leg (sciatica) or numbness.