Why Blood, Urine and Sometimes a Biopsy Are Needed to Pin Down Tubulointerstitial Disease

The message on the patient portal is only two lines long: your creatinine has gone up again, and the kidney team would like to talk. You feel fine. Perhaps a little tired, perhaps a faint ache low in the back that you had blamed on the new office chair. Now someone is using the phrase kidney biopsy for interstitial nephritis, and the word biopsy is doing all the shouting.

What most people do not realize in that moment is how quietly this part of the kidney fails. The tubules, the microscopic pipes that reclaim water and salt from the filtered blood, do not send pain signals. They simply stop working well, and the first clue is usually a number on a lab report rather than a symptom you noticed.

That is why the workup unfolds in layers. Blood first, then urine, then imaging, and only sometimes a needle. Each layer answers a question the previous one could not.

What is tubulointerstitial disease, in plain language?

Picture a kidney as a treatment plant with about a million tiny units working side by side. Each unit, called a nephron, has two parts: a filter (the glomerulus) that sieves fluid out of the blood, and a long tube (the tubule) that decides what to send back into the body and what to release as urine. The NIH’s kidney institute describes each kidney as holding roughly a million of these nephrons, together filtering around half a cup of blood every minute.

Tubulointerstitial disease is trouble in the second part of that system. The tubules and the supporting tissue packed between them, the interstitium, become inflamed, swollen, or scarred. When the problem is sudden and inflammatory it is usually called acute interstitial nephritis. When it has smoldered long enough to leave fibrous scar, it is chronic tubulointerstitial nephritis.

The distinction matters because the filters can be perfectly healthy while the plumbing behind them is failing. Standard kidney tests were largely designed around the filter, which is one reason this condition slips past early checks.

What sets it off? According to MedlinePlus, medicines are the most frequent trigger, particularly antibiotics, non-steroidal anti-inflammatory painkillers, and acid-suppressing drugs of the proton-pump-inhibitor class. Infections, autoimmune conditions such as sarcoidosis or lupus, and less commonly inherited or toxic causes can do the same. In many people the immune system reacts to something it perceives as foreign lodged in the tubular tissue, and the inflammation that follows is the injury.

Defining the problem this precisely is not academic. The cause shapes whether the first step is stopping an offending drug, treating an infection, or reaching for immune-suppressing medicine, and each of those paths asks a different question of the tests that follow.

What are the early symptoms of tubulointerstitial nephritis?

Ask a room of people with confirmed interstitial nephritis what they noticed first, and a surprising number will say nothing at all. The tubules lack pain receptors, so the earliest sign is very often a creatinine result that has drifted upward on a blood test ordered for another reason.

When interstitial nephritis symptoms do appear, they tend to be indirect and easy to attribute to something else. MedlinePlus lists fever, a skin rash, changes in how much urine is produced, nausea, swelling of the legs or around the eyes, fatigue, and altered mental alertness among the possibilities. Blood in the urine can occur but is far from universal. The classic textbook trio of fever, rash and a rise in a particular white blood cell called an eosinophil shows up in only a minority of people, which is why clinicians are taught not to wait for it.

Timing offers a better clue than the symptoms themselves. Drug-related cases often surface days to weeks after a new medicine is started, though the NIH notes that with some drug classes the gap can stretch to months. A careful medication history, including over-the-counter painkillers and supplements, is frequently the single most revealing part of the first appointment.

Chronic forms are quieter still. Over years, damaged tubules lose their ability to concentrate urine, so people may pass more dilute urine, wake at night to urinate, or feel persistently thirsty. Mild anemia and a gradual loss of energy can follow as the kidney produces less of the hormone that drives red-cell production.

None of this is a checklist to diagnose yourself. Its purpose is to explain why the first tests are blood and urine rather than a scan of the area that hurts, because for this disease, nothing usually hurts.

Is interstitial nephritis serious?

The honest answer is that it can be, and that a great deal depends on how quickly the cause is identified. Acute interstitial nephritis is one of the recognized causes of acute kidney injury, the medical term for a sudden drop in kidney function over hours to days. The NHS describes acute kidney injury as a condition that ranges from mild and fully reversible to severe enough to need dialysis, and interstitial nephritis sits across that whole spectrum.

What tips a case toward the reversible end is time. Inflammation in the interstitium is, at first, a crowd of immune cells that can disperse once the trigger is gone. Left alone for weeks or months, the same tissue begins to lay down scar. Scar does not disperse. Kidney specialists describe this shift from cellular inflammation to fibrosis as the point at which the window for full recovery starts to close, and it is the central reason the diagnostic sequence is run with some urgency.

Chronic tubulointerstitial nephritis, by contrast, is generally a slow decline. It is one of the pathways into chronic kidney disease, and management focuses on protecting the remaining function, controlling blood pressure, and removing any ongoing insult.

Where do individual outcomes land? Published series of biopsy-confirmed cases show a broad range, with some people returning to baseline and others left with a permanent reduction in function. Those studies also consistently point to the same predictors of a worse result: a longer delay before the cause is addressed, and more scar already visible on the tissue sample.

So serious, yes. But serious in a way that rewards a clear diagnosis rather than a fatalistic one. Your nephrology team is best placed to tell you where your own picture falls.

What blood tests show, and what they cannot

The first layer of the workup is a set of numbers, and the one everyone fixes on is creatinine. Creatinine is a waste product of normal muscle turnover that healthy kidneys clear steadily, so when it accumulates in the blood, filtering has slowed. Laboratories convert it into an estimated glomerular filtration rate, or eGFR, an approximation of how many milliliters of blood the kidneys clean each minute. The NIH kidney institute explains both measures in plain terms on its testing pages.

A rising creatinine tells the team something is wrong. It does not say what. A blocked ureter, dehydration, a flare of a filter disease and interstitial nephritis can all push that number the same direction. This is the first honest limit of blood testing: it measures the size of the problem, not its address.

Other values sharpen the picture. Potassium, bicarbonate and phosphate levels can reveal a tubule that has stopped balancing electrolytes properly, a signature more typical of tubular than filter disease. A complete blood count may show a raised eosinophil count in some drug-induced cases, though its absence rules nothing out. Tests for autoimmune markers, calcium levels or specific infections are added when the history points that way.

Blood tests are also repeated, because trajectory matters more than any single value. A creatinine that climbed after a new medicine and begins to fall within days of stopping it makes a strong circumstantial case. One that keeps rising despite the change does not, and that stubborn number is often what moves the conversation toward a biopsy.

The takeaway is not that blood tests are weak. They are fast, cheap in effort, and repeatable. They simply answer how much rather than why.

Why the urine test matters more than people expect

Urine is the one sample that has actually passed through the damaged tissue, and it carries evidence out with it. Yet patients routinely regard the small plastic cup as a formality next to the blood draw. In tubulointerstitial disease, that ranking is backwards.

A dipstick and laboratory urinalysis check several things at once. Protein in the urine is measured first, and its quantity is diagnostic in its own right. Damaged filters leak large amounts, often several grams a day. Damaged tubules leak much smaller amounts of smaller proteins. Cleveland Clinic and the NIH both describe low-grade proteinuria as the typical pattern in interstitial nephritis, a finding that steers the team away from filter disease before any tissue is seen.

Then there is the microscope. A trained eye looking at spun urine sediment may see white blood cells without any bacterial infection, a finding called sterile pyuria, or clumps of white cells molded into the shape of a tubule, known as white-cell casts. These casts form only inside the tubule itself, so their presence localizes the inflammation with a precision blood cannot match. Red cells and red-cell casts, by contrast, point toward the filter, and their presence would change the whole diagnostic direction.

Urine tests also do essential rule-out work. A culture excludes an ordinary kidney infection, which can look similar on first testing. Measuring how concentrated the urine is, its osmolality, reveals whether the tubules can still do their basic job of conserving water.

A test once popular for this disease, urine eosinophils, has fallen out of favor after studies found it neither sensitive nor specific enough to rely on. Its decline is a small case study in how evidence reshapes practice.

When is a kidney biopsy for interstitial nephritis actually needed?

Here is the tension at the heart of this diagnosis. Blood and urine can build a strong suspicion of interstitial nephritis, but only tissue can confirm it, and only tissue can distinguish active inflammation from established scar. A kidney biopsy for interstitial nephritis is therefore not a routine step but a decision, weighed case by case.

The usual candidates share a few features. The diagnosis remains genuinely uncertain after non-invasive tests, so that a filter disease or another cause cannot be excluded. Or kidney function keeps worsening despite the obvious trigger having been stopped. Or the treating team is contemplating immune-suppressing medicine, whose risks are hard to justify without knowing that the target is inflammation rather than fibrosis. The Mayo Clinic frames the purpose of any kidney biopsy in exactly these terms: to diagnose a problem that other tests cannot pin down, to gauge how much damage has occurred, and to guide treatment.

Others are usually asked to wait, and waiting is often the right call. Someone whose creatinine began falling within days of stopping a suspect antibiotic may never need a needle; the response itself is the confirmation. A person with only one functioning kidney, an uncontrolled bleeding tendency, a current infection, or blood pressure that cannot yet be brought under control is generally held back until those risks are addressed, because the NIH lists each as a reason to postpone or avoid the procedure.

Frailty and shared decision-making count too. When a result would not change what is done, most nephrologists will say so plainly and skip the biopsy. When it would, they will explain why the information is worth the small but real risk. Either way, the choice sits with you and your treating team.

What actually happens during a kidney biopsy for interstitial nephritis

The procedure most people undergo is a percutaneous needle biopsy, meaning through the skin. Understanding the sequence removes much of the dread.

You lie face down, sometimes with a pillow under the abdomen to push the kidneys toward the back. An ultrasound or occasionally a CT scanner is used to locate the lower pole of one kidney, chosen because it sits away from the large blood vessels near the center. The skin is cleaned and a local anesthetic is injected, so the area goes numb. You stay awake; the NIH notes that light sedation is offered to some people to help them relax, but general anesthesia is unusual for this procedure.

A thin spring-loaded needle is then guided into the kidney while you hold your breath for a few seconds, because breathing moves the kidney up and down. The needle takes a core of tissue roughly the diameter of a pencil lead. Most people describe a firm push and an audible click rather than pain. The Mayo Clinic describes the whole process as taking about an hour, with the needle passes themselves occupying only minutes.

Typically two or three cores are collected so the pathologist has enough tissue for standard staining, immune-marker staining and electron microscopy. In interstitial nephritis, the pathologist is looking for inflammatory cells crowding between the tubules, swelling of the interstitium, damage to the tubular cells themselves and, critically, the proportion of tissue already replaced by scar.

Afterwards you lie on your back for several hours while nurses check blood pressure, pulse and urine color. The Mayo Clinic advises most people to expect this monitored rest before going home the same day, though an overnight stay is arranged when the team judges it safer. Less commonly, a biopsy is done through a vein in the neck or during a surgical procedure, options reserved for people who cannot safely lie prone or who have a high bleeding risk.

Kidney biopsy risks: how serious is a kidney biopsy?

A needle into a richly supplied organ is not trivial, and pretending otherwise would be poor medicine. The realistic risks deserve a plain accounting.

Bleeding is the principal one. The kidneys receive a large share of the blood leaving the heart, so some bleeding around the puncture site is expected and usually stops on its own. The Mayo Clinic lists blood in the urine as the most common complication, noting that it typically clears within a day or two. Heavier bleeding that requires a blood transfusion or a procedure to seal a vessel is uncommon, and the NIH describes the need for surgical intervention as rare. Both sources are careful not to attach hard percentages, and neither will this article.

Pain at the site for a day or so is common and generally mild. An abnormal connection between an artery and a vein inside the kidney, called an arteriovenous fistula, can form and most close without treatment. Infection is possible but infrequent given the sterile technique used. Injury to the neighboring organs is very rare when imaging guidance is used.

Steps taken beforehand exist precisely to shrink these risks. Blood-thinning medicines and antiplatelet drugs are usually paused for a period set by the prescribing clinician; never stop them on your own. Blood pressure is checked and brought into a safer range. Clotting studies and a blood count are drawn. People with a single kidney, uncontrolled hypertension or a bleeding disorder may be steered toward a different biopsy route or away from the procedure altogether.

Weighed against these kidney biopsy risks is the cost of not knowing: potentially treating scar as if it were inflammation, or withholding treatment from inflammation that could still respond. That balance is different for every person, which is why the decision is made in a conversation rather than by protocol.

Blood, urine, imaging and biopsy: what each test can and cannot tell you

Imaging deserves a brief word before the comparison, because it is the step people most expect to settle matters and the one that least often does. An ultrasound shows kidney size, rules out a blockage, and confirms there are two kidneys before any biopsy is planned. In acute interstitial nephritis the kidneys may appear normal or slightly enlarged and bright; in chronic disease they are often small and scarred. Those patterns are suggestive, not diagnostic, and no scan can see the microscopic inflammation that defines the condition.

Test	What it reliably shows	What it cannot show	Typical place in the sequence
Blood tests (creatinine, eGFR, electrolytes)	How much filtering has fallen; electrolyte patterns typical of tubular damage; trend over days	The cause or location of the injury	First, and repeated throughout
Urinalysis and microscopy	Low-grade protein leak; white cells and white-cell casts pointing to the tubules; rules out infection and filter disease patterns	Whether inflammation or scar predominates	Alongside the first blood tests
Ultrasound or CT	Kidney size, blockage, cysts, safe biopsy target	Microscopic inflammation; the specific diagnosis	Early, and always before biopsy
Kidney biopsy	Confirms diagnosis; distinguishes inflammation from fibrosis; estimates how much tissue is scarred	Guaranteed prediction of recovery; the exact trigger	Only when the answer would change management

Read across the rows and the logic of the sequence becomes clear. Each test is chosen for what the previous one left open. The biopsy is powerful because it answers the question none of the others can, and it is used sparingly because it is the only one that carries meaningful physical risk.

What the following days and weeks usually look like

After the biopsy, the first stretch is about watching, not waiting for results. You will be asked to rest lying down for several hours while staff check your vital signs and the color of your urine. The NIH advises that most people can go home the same day once those checks are stable, and that a small amount of blood in the urine for the first day or so is expected.

The Mayo Clinic recommends avoiding strenuous activity, heavy lifting and contact sports for a period of about two weeks, because the puncture site continues to heal beneath a normal-looking surface. Ordinary walking and desk work are usually fine within a day or two. Any blood-thinning medicine that was paused is restarted only on the instruction of the prescribing clinician, at a time they judge safe.

Results arrive in stages. The Mayo Clinic notes that a preliminary report may be available within a day or two, while the full analysis, including special stains and electron microscopy, commonly takes up to a week or longer. Your nephrologist will usually book a follow-up to walk through the findings rather than release them cold.

What follows depends on what the pathologist saw. If the tissue shows active inflammation with little scar, the plan often centers on removing the trigger and considering immune-suppressing treatment. If scar dominates, the emphasis shifts toward protecting what remains. Creatinine is rechecked at intervals over the following weeks to months, because recovery in interstitial nephritis is measured in that timescale, not in days.

Many people describe this waiting period as harder than the biopsy itself. Knowing that the tests are repeated deliberately, to catch a trend rather than a single snapshot, can make those repeat blood draws feel less like bad news and more like the plan working.

What is the best treatment for interstitial nephritis?

People searching for the best acute interstitial nephritis treatment usually want a single answer, and the honest one is that the best treatment is the one that matches the cause and the stage of the disease shown by the tests above.

The first and most consistently effective step is removing the trigger. When a medicine is the likely culprit, stopping it under medical supervision is the cornerstone; MedlinePlus lists this as the primary measure for drug-induced cases. Never discontinue a prescribed medicine on your own, because the suspected drug may be treating something serious and a safer alternative needs to be arranged by the prescriber. Infections are treated on their own merits. Underlying autoimmune conditions are managed by the relevant specialist team.

The second step is supportive care: careful attention to fluids, correcting electrolyte imbalances the tubules have let slip, avoiding further kidney-toxic exposures, and controlling blood pressure. In severe acute kidney injury, temporary dialysis may be needed while the kidney recovers, and the NHS describes this as a bridge rather than a permanent step for most people.

The third and most debated step is corticosteroid medicine, a class of drugs that dampens immune activity. The mechanism is straightforward: fewer inflammatory cells in the interstitium means less ongoing damage. The evidence is less tidy. Observational studies suggest that people started on this treatment sooner tend to recover more function than those started later, but randomized trials are scarce, and no major guideline mandates its use in every case. Steroids carry their own side effects and do nothing for tissue that has already scarred. This is exactly why biopsy findings so often decide the question: inflammation may be worth treating, fibrosis generally is not.

The decision about whether, when and for how long to use immune-suppressing treatment rests with the nephrology team, weighing your kidney function trend, biopsy findings, other conditions and personal priorities.

What people often get wrong about interstitial nephritis and biopsy

Misunderstandings cluster around this diagnosis, and correcting them saves worry.

The first is that a biopsy means cancer. In kidney medicine, tissue sampling is overwhelmingly used to identify inflammation, scar or immune deposits, not tumors. When a nephrologist orders a biopsy for suspected interstitial nephritis, cancer is almost never the question being asked.

The second is that a normal urine test rules the condition out. Urinalysis can be bland, particularly in chronic disease or early in some drug reactions. A clean dipstick lowers suspicion; it does not close the case.

The third is that only prescription drugs are to blame. Over-the-counter anti-inflammatory painkillers, taken casually for years, are a well-recognized cause listed by MedlinePlus, and herbal or supplement products have been implicated in case series. Bringing every bottle to the appointment, including the ones that feel too ordinary to mention, genuinely helps.

The fourth is that the biopsy predicts the future. It describes the present. A sample showing active inflammation is encouraging because inflammation can settle, but it is not a promise, and a sample with scar does not mean nothing can be protected. Pathology informs the plan; it does not write the ending.

The fifth is that stopping the suspect medicine yourself is a harmless first step. It can be dangerous. Antibiotics for a serious infection, antiepileptics and other medicines listed as triggers may be doing critical work. Prescribers can usually find a substitute, but they need to be the ones making the switch.

The last is that recovery should be visible within days. Tubular tissue heals over weeks to months, and creatinine lags behind the actual repair. Repeat testing across that span is not a sign that something has gone wrong. It is how progress is measured.

Questions to ask your care team

Consultations move quickly and the useful questions arrive in the parking lot. Writing them down beforehand shifts the balance back toward you.

• Which of my results point toward interstitial nephritis, and which alternatives are you still considering?
• Is there a medicine in my current list you suspect, and what is the safe way to change it?
• How much has my kidney function fallen from my baseline, and how often will you recheck it?
• If you are recommending a biopsy, what specific question will the tissue answer that blood and urine cannot?
• What would you do differently if the biopsy shows mostly inflammation versus mostly scar?
• Are any of my other conditions or medicines a reason to delay or modify the biopsy?
• How should I manage my blood thinner or antiplatelet medicine around the procedure?
• What symptoms after the biopsy would mean I should call, and which are normal?
• How long might it take before we know whether my kidneys are recovering?
• If immune-suppressing treatment is on the table, what are the expected benefits, the side effects I should watch for, and how will we decide when to stop?
• Are there exposures at work, at home or in my diet that could be contributing?

Consider asking whether a summary of the plan can be sent through the patient portal, so the reasoning is on record for you and for any other clinician involved in your care. A companion who takes notes during the appointment is worth more than any pamphlet. And if something is explained in a way that does not land, say so; the people who order these tests generally prefer a second attempt at explaining over a patient who leaves quietly confused.

None of these questions has a single right answer. Their value is in making the decision a shared one, grounded in your own results.

When to call your doctor

Two sets of warning signs matter here: those linked to the kidney condition itself, and those that can follow a biopsy.

Where the condition is concerned, the NHS advises seeking urgent medical advice for acute kidney injury when someone is passing much less urine than usual, has swelling of the legs, ankles or face, feels persistently nauseated or is vomiting, becomes confused or unusually drowsy, or develops shortness of breath. A new rash with fever after starting a medicine, or a rapid rise in creatinine reported by your lab, also warrants a same-day call to the team managing your kidneys rather than waiting for the next scheduled visit.

After a biopsy, the Mayo Clinic and the NIH list signs that should prompt an immediate call or a trip to emergency care:

• Bright red blood or clots in the urine, or blood that persists beyond about 24 hours
• Inability to pass urine
• Worsening pain at the biopsy site or in the back or flank that is not eased by rest
• Fever or chills
• Feeling faint, dizzy, or unusually weak, which can signal internal bleeding
• Redness, warmth or discharge at the puncture site

A modest amount of pink-tinged urine and some site soreness on the first day are expected. Anything beyond that is not something to watch overnight; bleeding complications are most treatable when reported early.

Keep the number for your kidney team where you can find it, and know which emergency department they would want you to use. If you take a blood thinner and are unsure whether to restart it, that uncertainty alone is a reason to call. When in doubt about any of these signs, the safe default is to seek care and let the clinicians decide it was nothing.

Frequently asked questions

Is interstitial nephritis serious?

It can be, because acute interstitial nephritis is a recognized cause of acute kidney injury and, if inflammation is allowed to turn into scar, of long-term kidney damage. Many people recover much or all of their function once the trigger is identified and removed, while others are left with a permanent reduction. Speed of diagnosis and the amount of scar already present are the strongest predictors, so the workup is run with urgency.

How serious is a kidney biopsy?

A kidney biopsy is a low-risk but not risk-free procedure. The most common complication is temporary blood in the urine, which usually clears within a day or two. Heavier bleeding needing a transfusion or a procedure to seal a vessel is uncommon, and infection or injury to nearby organs is rare with imaging guidance. Teams screen blood pressure, clotting and medicines beforehand specifically to keep these risks low.

What is the best treatment for interstitial nephritis?

The most consistently effective treatment is removing the cause, most often a medicine, under the supervision of the prescriber who can arrange a safe alternative. Supportive care corrects fluid and electrolyte imbalances. Corticosteroids, which dampen immune activity, are used in selected cases, and observational evidence suggests earlier use may help, but the decision depends on biopsy findings and individual factors and rests with the nephrology team.

What are the early symptoms of tubulointerstitial nephritis?

Often there are none, and the first sign is a rise in creatinine on a routine blood test. When symptoms appear they may include fever, rash, fatigue, nausea, swelling, or changes in urine volume, typically days to weeks after starting a new medicine. Chronic forms can cause increased urination at night and thirst. Because these are non-specific, they are a reason to be tested rather than a way to self-diagnose.

What are the main kidney biopsy risks I should know about?

Bleeding is the principal risk, ranging from expected pink urine on the first day to uncommon heavier bleeding that needs a transfusion or intervention. Others include pain at the site, a small artery-to-vein connection inside the kidney that usually closes on its own, infection, and very rarely injury to nearby organs. People with one kidney, uncontrolled blood pressure or bleeding disorders face higher risk and may be offered a different approach.

Can interstitial nephritis be diagnosed without a biopsy?

Frequently, yes. When a rising creatinine follows a new medicine, urine tests show a low-grade protein leak with white cells, filter disease is excluded, and function improves within days of stopping the drug, many nephrologists accept the diagnosis without tissue. A biopsy is added when the picture is unclear, function keeps falling, or immune-suppressing treatment is being weighed and the team needs to know whether inflammation or scar dominates.

How long do kidney biopsy results take?

A preliminary reading is often available within a day or two, but the full report, which includes special stains and electron microscopy, commonly takes up to a week or sometimes longer according to the Mayo Clinic. Your nephrologist will usually schedule a follow-up to explain the findings in context rather than release them without discussion, because the same result can carry different implications depending on your function trend and history.

Will my kidneys recover from interstitial nephritis?

Many people regain much of their function, but recovery is not guaranteed and cannot be promised from tests alone. Published series of biopsy-confirmed cases consistently find that people whose trigger was addressed sooner, and whose tissue showed less scar, tend to do better. Recovery unfolds over weeks to months, so your team will track creatinine repeatedly during that time rather than judging the outcome from a single result.

What should I avoid after a kidney biopsy?

Avoid strenuous exercise, heavy lifting and contact sports for about two weeks, as the Mayo Clinic advises, because the puncture site continues to heal beneath intact skin. Do not restart any paused blood thinner or antiplatelet medicine until your prescriber says so. Watch your urine color for the first day, and call promptly if you see bright red blood, cannot pass urine, develop fever, or feel faint.

Can over-the-counter painkillers cause interstitial nephritis?

Yes. Non-steroidal anti-inflammatory drugs, the class that includes many common over-the-counter painkillers, are among the most frequently implicated triggers listed by MedlinePlus, and long-term casual use has been linked to both acute and chronic tubulointerstitial injury. This is why your team will ask about every product you take, not just prescriptions. Do not stop a medicine on your own; discuss safer options with the clinician managing your care.

References

• MedlinePlus: Interstitial nephritis
• NIH NIDDK: Kidney Biopsy
• NIH NIDDK: Your Kidneys & How They Work
• NHS: Acute kidney injury

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.