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What Is Renal Colic? Symptoms And Relief

Renal colic is pain that occurs due to a stone in the urinary tract. The urinary tract includes the kidneys, ureters, urinary bladder, and urethra. Treatments may include medication and surgical procedures.

Stones can develop anywhere in the urinary tract, and they can vary significantly in size. Most stones occur due to a buildup of minerals or other substances, such as uric acid, which stick together in the urine and create a hard mass.

There are several treatment options for urinary stones. However, as many stones pass without surgery, the management of renal colic is often the primary concern during treatment.

In this article, we explain how to recognize renal colic, what causes it, and ways to treat it.

The symptoms of renal colic vary depending on the size of the stone and its location in the urinary tract. Some small stones cause mild renal colic, and a person can pass them in the urine without much discomfort.

Larger stones can cause severe pain, especially if they become stuck and block any small passages in the urinary tract. Susceptible areas include the ureters, which are the tubes through which the urine passes between the kidney and the bladder.

The most common presentation of renal colic is pain on the affected side of the body between the lower ribs and hip. This pain tends to radiate to the lower abdomen and groin.

The pain typically comes in waves that each last 20–60 minutes before subsiding.

Renal colic is just one of the symptoms that urinary stones can cause. Other symptoms that commonly occur alongside renal colic include:

  • pain or difficulty urinating
  • blood in the urine, which may make it appear pink, red, or brown
  • urine that smells unusual
  • nausea
  • vomiting
  • small particles in the urine
  • feeling a constant urgent need to urinate
  • cloudy urine
  • urinating more or less frequently than usual
  • Symptoms of a related urinary tract infection (UTI) may occur for some people. These include fever, chills, and a cold sweat. Anybody experiencing any of these symptoms should talk to a doctor.

    Anyone experiencing the following symptoms alongside renal colic should contact the emergency medical services or go to the emergency room immediately:

  • a complete inability to urinate
  • uncontrollable vomiting
  • a fever higher than 101°F
  • Renal colic occurs due to a stone becoming lodged in the urinary tract, which commonly occurs in the ureter. Here, the stone stretches the surrounding area of tissue while trying to pass through, which can be painful.

    In addition, restricted urine flow may cause inflammation and increased pressure. The ureter may also spasm, causing pain.

    Several different chemicals and minerals can make up a kidney stone. Stones develop due to a few different risk factors, including:

  • extra calcium in the urine
  • diseases of the gastrointestinal (GI) tract, such as Crohn's disease or ulcerative colitis
  • gout, which occurs due to an excess of uric acid
  • certain medications
  • cystinuria, in which stones develop from an amino acid called cysteine
  • obesity
  • surgeries of the GI tract, such as a gastric bypass
  • dehydration
  • a family history of urolithiasis
  • Doctors will often use blood tests to check for increased levels of stone-forming substances in a person's body. An imaging test can help locate any significant stones in the urinary tract, such as a plain film X-ray, CT scan, or ultrasound.

    Medical treatment will often depend on the type of stone. There are several different types of stone, including:

  • Calcium stones: These are the most common types of stone and consist of calcium oxalate.
  • Uric acid stones: These stones develop when uric acid concentrates in the urine.
  • Cystine stones: Cystine stones are rare and occur due to cystinuria.
  • Struvite stones: Bacteria in the urinary tract can cause struvite stones, although these are also less common.
  • People can pass most small stones in the urine. Doctors will recommend hydration, and they may prescribe pain relieving medications to help a person deal with the pain. They will monitor the person until the stone passes.

    A range of procedures can help a person remove larger stones and relieve renal colic. These include:

  • Ureteroscopy guided stone extraction: This invasive surgical procedure involves a doctor inserting a thin scope with a light and attached camera into the urinary tract. Using this allows them to locate and remove the stone.
  • Extracorporeal shock wave lithotripsy (ESWL): ESWL is a noninvasive treatment. It is the process of aiming small sound waves at the kidneys to break up stones into tiny pieces. A person can then pass these fragments in the urine.
  • Percutaneous nephrolithotomy: Doctors typically perform this procedure under general anesthesia. They will make a small incision in the person's back to access the kidney and will remove the stone using a lighted scope and small surgical instruments.
  • Stent placement: Sometimes, doctors place a thin tube into a person's ureter to help relieve the obstruction and promote the passing of stones.
  • Open surgery: Some people who cannot pass the stones may require open surgery. However, this has a longer recovery time than other procedures. Doctors will often try to extract or break up the stones so that a person can pass them before considering open surgery.
  • Treatment may also include medications that help relieve symptoms or reduce the buildup of stones. These treatments may include:

  • antibiotics
  • alkalinizing agents
  • corticosteroids
  • calcium channel blockers
  • selective alpha-1 blockers
  • A person can take several steps to help prevent kidney stones. Learn more here.

    Pain management is an essential step in treatment, as it can improve a person's quality of life until the stone passes. Doctors may also recommend medications to calm the GI tract and manage any nausea and vomiting.

    Placing a heat pack on the side or lower back may calm the muscle spasms that can occur in people with renal colic.

    Avoiding renal colic starts with preventing the stones that cause the symptoms.

    A doctor may prescribe a thiazide diuretic if a person has a tendency to develop calcium oxalate urinary tract stones.

    In other cases, they may recommend that people increase their fluid intake and reduce the sodium in their diet.

    Drinking more fluid may not always improve renal colic or help flush stones out of the urinary tract, but it will, at least, prevent dehydration.

    Many people benefit from eating a healthful diet that is rich in a variety of whole grains, vegetables, fruits, and lean proteins. Doctors may also advise people to increase their intake of citrus fruits, such as oranges, lemons, and grapefruits.

    Learn about the links between diet and kidney stones here.

    Many stones will pass on their own, but they may still cause renal colic. Doctors will often explore the best combination of medical and surgical treatment options to help break down larger stones and allow them to pass.

    Stones in the urinary tract can sometimes grow again after successful treatment. Taking preventive measures can help people prevent further stones from developing and reduce the symptoms of renal colic.


    What Is Coronary Artery Disease?

    Coronary artery disease is the most common form of heart disease. It happens when something, like plaque buildup, reduces blood flow to the heart. It can increase your risk of heart attack.

    Coronary artery disease (CAD) causes impaired blood flow in the arteries that supply blood to the heart. Also called coronary heart disease (CHD), CAD is the most common form of heart disease and affects approximately 16.5 million Americans over the age of 20.

    It's also the leading cause of death for both men and women in the United States. It's estimated that every 36 seconds, someone in the United States has a heart attack.

    A heart attack can come from uncontrolled CAD.

    When your heart doesn't get enough arterial blood, you may experience a variety of symptoms. Angina (chest discomfort) is the most common symptom of CAD. Some people describe this discomfort as:

    These symptoms can also be mistaken for heartburn or indigestion.

    Other symptoms of CAD include:

    You may experience more symptoms when your blood flow is more restricted. If a blockage cuts off blood flow completely or almost completely, your heart muscle will start to die if not restored. This is a heart attack.

    Don't ignore any of these symptoms, especially if they are excruciating or last longer than five minutes. Immediate medical treatment is necessary.

    Symptoms of CAD for women

    Women may also experience the above symptoms, but they're also more likely to have:

    Men have a higher risk of developing heart disease than women, however.

    Due to decreased blood flow, your heart may also:

  • become weak
  • develop abnormal heart rhythms (arrhythmia) or rates
  • fail to pump as much blood as your body needs
  • Your doctor will detect these heart abnormalities during diagnosis.

    The most common cause of CAD is a vascular injury with cholesterol plaque buildup in the arteries, known as atherosclerosis. Reduced blood flow occurs when one or more of these arteries becomes partially or completely blocked.

    Other rare causes of damage or blockage to a coronary artery also limit blood flow to the heart.

    Understanding the risk factors for CAD can help with your plan to prevent or decrease the likelihood of developing the disease.

    Risk factors include:

    The risk for CAD also increases with age. Based on age alone as a risk factor, men have a greater risk for the disease beginning at age 45 and women have a greater risk beginning at age 55. The risk for coronary artery disease is also higher if you have a family history of the disease.

    Diagnosing CAD requires a review of your medical history, a physical examination, and other medical testing. These tests include:

  • Electrocardiogram: This test monitors electrical signals that travel through your heart. It may help your doctor determine whether you've had a heart attack.
  • Echocardiogram: This imaging test uses ultrasound waves to create a picture of your heart. The results of this test reveal whether certain things in your heart are functioning properly.
  • Stress test: This particular test measures the stress on your heart during physical activity and while at rest. The test monitors your heart's electrical activity while you walk on a treadmill or ride a stationary bike. Nuclear imaging or echocardiographic imaging may also be performed for a portion of this test. For those unable to perform physical exercise, certain medications can be used instead for stress testing.
  • Cardiac catheterization (left heart catheterization): During this procedure, your doctor injects a special dye into your coronary arteries through a catheter inserted through an artery in your groin or wrist. The dye helps enhance the radiographic image of your coronary arteries to identify any blockages.
  • Heart CT scan: Your doctor may use this imaging test to check for calcium deposits in your arteries.
  • The four primary coronary arteries are located on the surface of the heart:

    These arteries bring oxygen and nutrient-rich blood to your heart. Your heart is a muscle that's responsible for pumping blood throughout your body and needs oxygen all the time. A healthy heart moves approximately 3,000 gallons of blood through your body every day.

    Like any other organ or muscle, your heart must receive an adequate, dependable supply of blood in order to carry out its work. Reduced blood flow to your heart can cause symptoms of CAD.

    Everyone's outlook for CAD is different. You have better chances of preventing extensive damage to your heart the earlier you can start your treatment or implement lifestyle changes.

    It is important to follow your doctor's instructions. Take medications as directed and make the recommended lifestyle changes. If you have a higher risk for CAD, you can help to prevent the disease by reducing your risk factors.


    Symptoms & Types

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    One of the most serious health problems related to untreated high blood pressure, atherosclerosis contributes to coronary artery disease. Learn about symptoms, diagnoses, and treatment of atherosclerosis.

  • Stroke and Hypertension

    A stroke occurs when blood flow to an area in the brain is cut off and people who have hypertension are four to six times more likely to have a stroke. Learn your risk factors and the warning signs of stroke and what to do in a stroke emergency.

  • Hypertension and Heart Disease

    Heart disease is the No. 1 cause of death associated with hypertension. Learn more about related heart conditions, their diagnoses, and treatment.

  • Kidney Disease and Hypertension

    Hypertension is a major cause of kidney disease and kidney failure. There are symptoms to watch for -- and treatment options. Learn more.

  • High Blood Pressure and Eye Disease

    Untreated hypertension can affect your eyesight, causing damage to the blood vessels in the retina. Known as hypertensive retinopathy, learn more about this condition and its prevention.

  • High Blood Pressure and Diabetes

    Hypertension is a risk factor for the development and worsening of many diabetes complications, and likewise having diabetes increases your risk of developing high blood pressure. Learn more about how these two conditions affect one another.

  • Preeclampsia: High Blood Pressure and Pregnancy

    High blood pressure can be a sign of preeclampsia, a pregnancy-related problem that can become life-threatening. Learn what you need to know.

  • Metabolic Syndrome and High Blood Pressure

    Metabolic syndrome is a group of health problems which include too much fat around the waist, elevated blood pressure, elevated blood sugar, and more -- all increasing your risk of heart attack, stroke, and diabetes. Find out more about metabolic syndrome here.

  • High Blood Pressure and Erectile Dysfunction

    High blood pressure by itself can lead to erectile dysfunction. But some drugs for treating high blood pressure can actually be the cause as well. Find out more about why high blood pressure is a major cause of erection problems.

  • Side Effects of High Blood Pressure Medications

    This article lists the side effects that may be caused by each type of high blood pressure drug.






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