Kidney failure occurs when the kidneys lose enough function that they can no longer adequately remove waste and excess fluid or maintain the body's chemical balance.
Kidney failure can develop suddenly, known as acute kidney injury (AKI), or progress gradually as a consequence of chronic kidney disease (CKD).
The condition can affect fluid balance, electrolytes, blood pressure, red blood cell production and bone and mineral metabolism. The symptoms and treatment depend greatly on whether the kidney problem is acute or chronic and how severe the loss of function has become.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation and management for patients with kidney disease and kidney failure.
What Do the Kidneys Normally Do?
The kidneys perform several essential functions every day. They:
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Filter waste products from the blood
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Remove excess fluid through urine
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Help regulate sodium and potassium
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Contribute to blood-pressure regulation
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Support red blood cell production
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Help maintain acid-base balance
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Participate in calcium and bone metabolism
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Help maintain the body's internal chemical balance
When kidney function declines significantly, these processes can become impaired.
What Are the Symptoms of Kidney Failure?
Symptoms can vary considerably. Some people with early kidney disease have no obvious symptoms, while advanced kidney failure can cause multiple problems.
Possible symptoms include:
Changes in Urination
A person may notice:
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Increased or decreased urine production
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Frequent nighttime urination
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Foamy urine
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Blood in urine
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Changes in urine appearance
Swelling
Excess fluid may cause swelling in:
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Feet
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Ankles
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Legs
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Hands
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Around the eyes
Persistent Fatigue
Advanced kidney disease can contribute to anemia and accumulation of waste products, resulting in weakness and reduced energy.
Nausea and Loss of Appetite
Severe reduction in kidney function may cause:
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Nausea
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Vomiting
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Poor appetite
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Unpleasant taste
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Weight loss
Itching and Muscle Cramps
Changes in mineral balance and the accumulation of waste products may contribute to itching and muscle cramps.
Breathlessness
Fluid accumulation can contribute to shortness of breath, particularly in advanced kidney failure.
Difficulty Concentrating
Severe kidney dysfunction can affect mental alertness and concentration.
These symptoms are not specific to kidney failure, so testing is necessary to determine the cause.
What Causes Kidney Failure?
Kidney failure can result from many different medical conditions.
Diabetes
Long-standing diabetes can damage the kidney's filtering structures and is an important cause of chronic kidney disease.
High Blood Pressure
Persistent hypertension can damage blood vessels within the kidneys and contribute to progressive loss of kidney function.
Acute Kidney Injury
A sudden decline in kidney function can occur because of:
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Severe dehydration
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Serious infections
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Major blood loss
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Certain medicines
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Severe illness
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Urinary obstruction
Some forms of AKI can improve substantially when treated promptly.
Glomerular Diseases
Diseases affecting the kidney's filtering units can cause protein leakage, blood in urine and progressive kidney damage.
Polycystic Kidney Disease
This inherited condition causes multiple cysts to develop in the kidneys and can eventually lead to reduced kidney function.
Kidney Obstruction
Conditions such as stones, enlarged prostate or other urinary tract blockages can interfere with urine flow and, if severe or prolonged, damage kidney function.
Autoimmune Conditions
Some autoimmune diseases can directly affect the kidneys and cause inflammation or progressive damage.
Acute Kidney Failure vs Chronic Kidney Failure
Understanding the difference between acute and chronic kidney problems is essential.
| Acute Kidney Injury | Chronic Kidney Disease |
|---|---|
| Develops over hours or days | Develops over months or years |
| Often caused by an acute illness or injury | Often associated with diabetes, hypertension or other chronic conditions |
| May be partially or completely reversible depending on the cause | Chronic structural damage is generally not completely reversible |
| Requires prompt assessment | Requires long-term monitoring and management |
| Dialysis may sometimes be temporary | Advanced disease may eventually require kidney replacement therapy |
A doctor may need previous blood-test results, urine studies and imaging to determine whether kidney dysfunction is acute, chronic or acute-on-chronic.
What Are the Stages of Chronic Kidney Disease?
CKD is commonly classified using eGFR and evidence of kidney damage.
The main G categories are:
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G1: eGFR 90 or above, with evidence of kidney damage when applicable
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G2: eGFR 60–89, with evidence of kidney damage when applicable
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G3a: eGFR 45–59
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G3b: eGFR 30–44
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G4: eGFR 15–29
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G5: eGFR below 15
An eGFR value alone does not always tell the complete story. Doctors also consider urine albumin, symptoms, underlying disease and changes over time.
G5 is often referred to as kidney failure when the reduced function is persistent and clinically significant.
How Is Kidney Failure Diagnosed?
Kidney failure cannot be diagnosed based on symptoms alone.
Doctors may use several investigations.
Blood Tests
Common tests include:
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Serum creatinine
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eGFR
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Blood urea
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Sodium
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Potassium
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Bicarbonate
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Hemoglobin
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Calcium and phosphate when indicated
Urine Testing
Urine tests can identify:
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Protein
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Albumin
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Blood
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Infection
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Other abnormalities
Imaging
Kidney ultrasound or other imaging may help identify:
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Kidney size
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Urinary obstruction
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Stones
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Cysts
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Structural abnormalities
Additional investigations, including specialized blood tests or kidney biopsy, may be required depending on the suspected cause.
Why Is Creatinine Important?
Creatinine is a waste product produced by normal muscle metabolism and removed primarily through the kidneys.
When kidney filtration decreases, blood creatinine may rise.
However, creatinine alone does not provide a complete assessment of kidney health.
Doctors interpret creatinine alongside:
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eGFR
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Age
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Body composition
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Previous results
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Urine findings
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Clinical symptoms
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Other laboratory findings
A rapidly increasing creatinine can indicate acute kidney injury and requires timely assessment.
How Is Kidney Failure Treated?
Treatment depends on the cause and severity.
The objectives may include treating the underlying disease, protecting remaining kidney function, controlling complications and planning kidney replacement therapy when necessary.
Treating the Underlying Cause
Depending on the diagnosis, treatment may involve managing:
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Diabetes
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High blood pressure
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Kidney infections
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Autoimmune disease
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Kidney stones
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Urinary obstruction
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Glomerular disease
Managing Complications
Doctors may treat:
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Anemia
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High potassium
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Fluid retention
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Acidosis
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Bone and mineral abnormalities
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High blood pressure
Dialysis
Advanced kidney failure may require kidney replacement therapy.
The major dialysis approaches include:
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Hemodialysis
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Peritoneal dialysis
Dialysis removes waste products and excess fluid when the kidneys can no longer perform these functions adequately.
Kidney Transplantation
A kidney transplant may be an option for appropriately selected patients with advanced kidney failure.
A transplant evaluation assesses overall health, suitability for surgery, possible donor options and other factors.
Conservative Kidney Management
Some patients may choose a supportive approach that focuses on symptom control and quality of life without dialysis or transplantation.
This decision should be made through detailed discussion with a nephrologist and the patient's family or caregivers when appropriate.
Does Kidney Failure Always Require Dialysis?
No.
Dialysis is not automatically started solely because a particular creatinine or eGFR value is reached.
Doctors consider the overall clinical situation, including:
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Symptoms
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Fluid overload
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Potassium abnormalities
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Acid-base problems
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Waste-product accumulation
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Nutritional status
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Response to medical treatment
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Overall health
In acute kidney injury, dialysis may sometimes be temporary if kidney function recovers.
In established advanced CKD, long-term kidney replacement therapy may eventually be necessary.
Can Kidney Failure Be Reversed?
The answer depends on the underlying cause.
Acute Kidney Injury
Some causes of AKI can improve substantially when the underlying problem is identified and treated quickly.
Chronic Kidney Disease
Established chronic kidney damage generally cannot be completely reversed. However, appropriate treatment may slow further decline and reduce complications.
This distinction is why early nephrology evaluation is important when kidney function suddenly changes.
How Can Kidney Failure Be Prevented or Delayed?
Not every case of kidney failure can be prevented, but progression of many common kidney diseases can be slowed.
Important measures include:
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Control blood pressure
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Manage diabetes effectively
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Avoid smoking
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Maintain a healthy weight
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Exercise regularly
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Limit excessive dietary salt
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Use painkillers and other medicines responsibly
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Avoid unverified herbal kidney remedies
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Treat urinary infections promptly
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Monitor kidney function when risk factors are present
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Follow medical advice for existing CKD
People with diabetes or hypertension may benefit from regular urine and kidney-function testing.
Kidney Failure and Diet
Dietary requirements change as kidney disease progresses.
Depending on kidney function and laboratory results, a patient may need individualized advice regarding:
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Sodium
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Potassium
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Phosphorus
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Protein
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Calories
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Fluids
There is no universal “kidney failure diet.” Dietary restrictions should be based on the patient's medical condition and treatment plan.
Patients receiving dialysis may have different nutritional requirements from those who are not on dialysis.
When Is Kidney Failure an Emergency?
Some kidney-related situations require urgent medical attention.
Seek immediate medical care for symptoms such as:
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Severe breathlessness
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Chest pain
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New confusion or marked drowsiness
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Severe weakness
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Very low or absent urine output
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Severe swelling
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Persistent vomiting
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Severe dehydration
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Rapid deterioration in overall condition
Severe potassium abnormalities and fluid overload can become life-threatening and require prompt treatment.
Who Is at Higher Risk of Kidney Failure?
The risk is higher in people with:
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Diabetes
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High blood pressure
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Cardiovascular disease
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Family history of kidney disease
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Recurrent kidney stones
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Recurrent kidney infections
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Autoimmune disorders
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Polycystic kidney disease
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Previous acute kidney injury
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Long-standing obesity
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Certain medication exposures
Regular medical follow-up can help detect kidney damage before it becomes advanced.
Kidney Failure Evaluation at Prabhakar Bhurke Clinic
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized care for patients with kidney disorders ranging from early CKD to advanced kidney failure.
Evaluation and treatment may include:
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Kidney-function assessment
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Acute kidney injury evaluation
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Chronic kidney disease management
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Blood-pressure and diabetes-related kidney care
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Proteinuria evaluation
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Electrolyte management
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Dialysis planning and medical management
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Peritoneal dialysis assessment
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Kidney transplant evaluation and related care
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Management of complications of advanced kidney disease
Treatment is planned according to the patient's diagnosis, kidney function, overall health and individual treatment goals.
Frequently Asked Questions About Kidney Failure
What is the first sign of kidney failure?
There may be no noticeable first sign. Kidney disease can remain silent for a long time. When symptoms develop, fatigue, swelling, urinary changes, nausea and appetite loss may occur.
Can kidney failure happen suddenly?
Yes. Acute kidney injury can cause a sudden decline in kidney function over hours or days.
What is the main cause of kidney failure?
Diabetes and high blood pressure are major causes of chronic kidney disease and kidney failure. Other causes include glomerular diseases, inherited disorders, autoimmune diseases, obstruction and severe acute kidney injury.
Can a person live with kidney failure?
Yes, depending on the severity and treatment. People with advanced kidney failure may be treated with dialysis, kidney transplantation or, in selected situations, comprehensive conservative kidney management.
Is high creatinine always kidney failure?
No. Creatinine can rise for several reasons. Doctors evaluate the result alongside eGFR, previous measurements, urine tests and the overall clinical situation.
Can kidney failure be cured?
Some acute kidney injuries can recover. Established advanced chronic kidney failure generally cannot be cured with medicines alone, although its complications can be managed and kidney replacement therapies can support life.
Conclusion
Kidney failure is a serious condition in which kidney function becomes severely impaired. It can develop suddenly because of acute kidney injury or gradually as a consequence of chronic kidney disease.
Recognizing risk factors, monitoring kidney function and treating conditions such as diabetes and high blood pressure can help protect kidney health. When advanced kidney failure develops, treatment may involve dialysis, kidney transplantation or carefully planned supportive care.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialized evaluation and individualized treatment planning for patients with kidney disease and kidney failure.
Medical Disclaimer
This article is intended for general educational purposes only and does not constitute medical advice, diagnosis or treatment. Kidney failure has many possible causes, and treatment must be individualized after appropriate clinical assessment and testing. Do not start, stop or change medicines, dialysis schedules, fluid restrictions or dietary restrictions based solely on information in this article. If you experience severe breathlessness, chest pain, confusion, markedly reduced or absent urine output, severe weakness or rapidly worsening symptoms, seek urgent medical attention.
