Kidney Stones

Early Symptoms of Kidney Stones

You wake up in the middle of the night feverish, your lower back hurts, and your abdomen is painfully swollen and tender. What’s even worse is that when you get up to use the bathroom, it’s so painful to urinate that you think you might die.

You, my friend, are likely one in 10-percent of North Americans with a kidney stone.

This excruciating condition occurs when a small speck of calcium (from your urine) forms in the kidney or the ureter (the passageway from your kidney to your bladder) and more minerals stick to it to form a tiny stone that many patients describe as so terrible, it’s “more agonizing than giving birth.”

If you have a kidney stone, you’ll likely know it soon enough. However, there are several early warning signs that can alert you to the formation of a stone early on…

1. Frequent Urination

One of the earliest and most common warning signs that you may have kidney stones is a sudden and unexplained increase in the frequency and urgency of urination. You will notice an intense need to urinate, even when you haven’t been drinking unusually large quantities of fluid.

2. Spreading Back Pain

A localized, nondescript form of pain often accompanies kidney stones from their earliest stages. Patients usually report that this pain begins in their sides and back, just below the rib cage where the kidneys are located. As the condition develops, the pain may travel from the lower abdomen down into your groin area and into your lower back, presenting in fluctuating waves of throbbing pain and general tenderness. These waves of pain can last anywhere from a few minutes to a few hours, depending on the size and location of the kidney stones.

Men with kidney stones may also find that the pain can migrate into their scrotum and testicles. Some of the symptoms of kidney stones may mimic certain sexually transmitted infections (STIs), especially pain in the genital region and painful urination. If you’re experiencing these symptoms, it’s important that you get a prompt and proper diagnosis as soon as possible.

3. Blood in Urine

In addition to more frequent urination and painful urination, you will likely notice changes in the color and consistency of your urine if you have kidney stones. Discoloration is one of the most notable of these changes; rather than being clear or yellow in color, your urine may range anywhere from pink or red to light or dark brown. As the kidney stones grow and block off your urethra, you may also begin to notice your urine tinged with small amounts of blood, a condition known as hematuria.

Blood gets into your urine when the kidney stone lodges itself in your urethra, scraping against your ureter or kidneys. If that sounds painful, that’s because it is this condition causes intense discomfort. The amount of pain you’re in is a good indicator of the size of the kidney stone; larger stones cause more intense pain, while smaller ones produce milder discomfort.

4. Nausea and Vomiting

Some people suffering from kidney stones report that they feel nauseous. In some cases, this nausea can become so severe that it will cause vomiting, which can, in turn, cause a host of other complications ranging from nutritional deficits to dehydration. One of the causes of vomiting is the intense pain that you will experience if you pass a kidney stone. Some people find the pain so intense that they throw up.

Another reason vomiting occurs is that the kidneys play a very important role in eliminating toxins and wastes from your body. Kidney stones impair the organ’s proper function, meaning that there are likely to be elevated levels of toxins and impurities in your stomach contents and bloodstream. Your body wants to get rid of these toxins, but if your kidney function is impaired, vomiting may be the only other way to expel them.

5. Pungent Smelling Urine

Patients suffering from kidney stones will also notice that along with discoloration, urine also appears cloudy and may give off a pungent and foul odor. While it is normal for urine to give off a slightly bitter smell from time to time, there’s no mistaking or missing the kind of sharp stench that can occur if you have kidney stones. This odor occurs due to the presence of a heavy concentration of hard chemicals and toxins in the urine.

As mentioned, the kidneys play an important role in removing toxins and chemical impurities from your body. Many of these substances are eliminated through the urine, but with your kidney’s normal functioning impaired, these toxins can linger and actually crystallize in the body. Those crystallized toxins are what the kidney stone is made of, and when they are released in your urine, you’ll smell the difference.

6. Fever and Chills

It is unusual for kidney stones to go untreated, since the symptoms they cause produce such high levels of pain and discomfort. However, in a small minority of cases, the kidney stone remains relatively small and doesn’t cause intense symptoms. In such cases, the kidney stone is still causing problems in the urinary tract, scratching up against surfaces and creating small internal wounds that could become infected.

Kidney stones bring a heightened risk of urinary tract infection (UTI), which can, in turn, cause a fever and chills. Other symptoms of UTIs include abdominal or pelvic pain and abnormalities in the color, frequency, and consistency of urine. The fever can reach high levels, potentially putting the patient in danger. You should always consult a doctor if you have a high fever, especially if it’s accompanied by chills and isn’t being caused by a known factor, such as a cold or flu.

7. Kidney and Abdominal Swelling

If the kidney stones reach a large size, they can effectively block the normal flow of urine, preventing urine from traveling through the urethra on its way out of the body. This creates a backlog of urine, which gives rise to a whole host of potentially serious symptoms. One of the earliest signs that things are reaching this critical stage is intensely painful swelling of the kidneys.

You have two kidneys, one on either side of your body. They are located beneath your diaphragm, near your lower back. If they become painfully swollen, you will notice swelling and inflammation in this area and in surrounding regions of the abdomen and groin. These areas will be very painful to the touch, and you should seek immediate medical attention if you develop these symptoms. Should this symptom go untreated, you risk having your body go into septic shock as it becomes overwhelmed by the toxins in the urine it can’t get rid of.

8. Sudden and Severe Pain

Reader’s Digest talked to Douglas Propp, MD, Medical Director and Chair of Emergency Medicine at Advocate Lutheran General Hospital in Park Ridge, Illinois, about the warning signs of kidney stones. He listed sudden and severe pain as one of the main warning signs. This is the symptom that gets them in the emergency room in the first place, before they even realize what they’re suffering from. “Pain associated with kidney stones often comes on suddenly and is sometimes described as excruciating as the pain associated with labor,” says Dr. Propp.

The pain is so bad it often comes with no available relief, no matter what position they are in. It can even wake someone from their sleep. It can feel similar to a stomach ache or a back strain that starts in the upper back. The pain might move down into their lower back as the kidney stone moves closer to the bladder. Reader’s Digest also notes that the size of a kidney stone doesn’t have much impact on the severity of pain, but they’re usually about five millimeters in length. Even the smallest of stones can cause an unnerving amount of pain.

9. Urinate in Small Amounts

As we previously mentioned, kidney stones come in all different shapes and sizes. While the average kidney stone is five millimeters in length, there have been ones that are bigger. Someone who’s suffering from a larger kidney stone might find it stuck in their ureter. Healthline points out that this could cause even more problems, such as slowing or stopping the flow of urine.

If you find that you are unable to urinate or that it’s only happening in small amounts at a time, go see a doctor immediately.

10. Painful Urination

When you do produce a normal volume of urine, you may find that the act of urinating causes intense pain. This happens if the kidney stone is moving from the bladder into the urethra. Sharp, searing pain will occur, and you may also develop a UTI as the kidney stone migrates further. By the time things reach this point, chances are you’ll already have gone to see your doctor; if you haven’t, book an appointment.

11. Unable to Sit Still

This one isn’t all that surprising, especially considering how painful a kidney stone can be! Someone who’s in an excruciating amount of pain will find it hard to remain in one place even though it probably won’t do any good for their symptoms! The National Library of Medicine says an episode of kidney stone pain can last anywhere from 20 to 60 minutes. talked to Margaret Pearle, MD, PhD, Professor and Vice Chair of Urology at UT Southwestern Medical Center in Dallas who said, “People are not sitting still with stones. They’re moving around to try to find a more comfortable position.”

12. Flu-Like Symptoms

We’ve already listed a lot of the symptoms that are related to this, but in general, kidney stones can cause what’s described as flu-like symptoms, especially if the patient develops an infection. According to LiveStrong, sometimes an infection will develop if a kidney stone gets stuck in the urinary tract. This infection will cause “fever, chills, and fatigue. Severe back or abdominal pain caused by kidney stones can lead to stomach upset in patients.” Of course, an upset stomach also leads to nausea or vomiting. Don’t go assuming you’ve got a kidney stone every time you’ve come down with the flu! Check for other related symptoms and as always, be sure to consult a doctor.

Katherine George

Katherine George

Katherine is the Senior Managing Editor of ActiveBeat and Childhood. She is constantly striving to live a more active and healthy life, from eating healthy, exercising, and just spending more time outdoors. She enjoys cooking (with wine), walking her dog, reading, and recently joined a yoga studio!