Loss Of Smell From Covid Can Last Many Months
TUESDAY, Feb. 23, 2021 — By now, most folks know that a loss of smell and taste are a hallmark of COVID-19 infection, but new research shows it can continue up to five months after the virus first strikes.
“It was apparent from the beginning of the pandemic that a significant percentage of people lost their capacity to smell,” said researcher Dr. Nicolas Dupre, director of neuromuscular and neurogenetic disease clinic at Laval University in Quebec. “This is quite common in many infectious diseases, but in COVID, the effect was much more important.”
In other viruses, smell and taste usually return after the sinuses are clear. But in COVID-19, the virus might penetrate the small area of the brain called the olfactory bulb, which is important for the recognition of smell, Dupre explained.
“The virus probably kills some of the cells in the olfactory bulb, and that’s why you have a long-lasting effect,” he said.
Losing your sense of smell can affect your daily life, Dupre said. And even when it returns, it can be different from before the virus, he said. In some people, the loss of smell might be permanent, but that’s not clear yet.
“We still think that in 80% of the people there’s not as a significant impact on their smell. So, most people will recover, but in a small percentage, it may be permanent, so this could be part of the long-term disability that we see in COVID,” Dupre said.
Heart Problems After Covid
SARS-CoV-2 infection can leave some people with heart problems, including inflammation of the heart muscle. In fact, one study showed that 60% of people who recovered from COVID-19 had signs of ongoing heart inflammation, which could lead to the common symptoms of shortness of breath, palpitations and rapid heartbeat. This inflammation appeared even in those who had had a mild case of COVID-19 and who had no medical issues before they got sick.
Loss Of Smell Get Tested
COVID-19 can impact your senses of taste and smell in several ways. You could completely lose your sense of smell or taste, or these senses could become less keen than usual for you. For some COVID-19 patients, some foods start to taste wrong, and certain scents seem different than normal.
Loss of sense of smell, also known as anosmia, is often an early indicator of a COVID-19 infection. In some cases, anosmia is the only symptom of COVID-19. Noticing this symptom can allow you to identify a case early and avoid infecting others.
If you notice changes in your ability to taste or smell, you should self-isolate and get tested for COVID-19 right away. The team at GatherWell offers multiple types of COVID-19 testing and can rapidly get you the results you need to determine your next steps.
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Cleaning Inside Your Nose Can Help
Rinsing the inside of your nose with a saltwater solution may help if your sense of smell is affected by an infection or allergy.
You can make a saltwater solution at home.
You do not need to use all of the solution, but make a fresh batch each day do not reuse any left over from the day before.
Some pharmacies sell sachets you can use to make a saltwater solution and devices to help you rinse your nose.
What This Means For You
If you lose your sense of smell and taste after having COVID-19, it might take some time for you to recover these senses. While many people get the senses back within a few weeks, studies have shown that the symptoms can persist for months in some people.
If you have any lingering symptoms after you’ve had COVID, it’s important to talk to your healthcare provider. While researchers are still trying to figure out what causes “long-COVID” there is some evidence that it could have a neurological basis.
The information in this article is current as of the date listed, which means newer information may be available when you read this. For the most recent updates on COVID-19, visit our coronavirus news page.
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When Will Smell Taste Come Back 5 Covid
Temporary loss of smell, known as anosmia, is a commonly reported indicator of COVID-19.
Losing your sense of smell and taste can be jarring and emotional, and adjusting to the seemingly muted world can be difficult at first. However, research looks promising for COVID-19 patients with anosmia, though scientists say there’s still a lot unknown.
Here’s what we know about anosmia related to COVID-19 thus far:
How does it happen?
The novel coronavirus likely changes the sense of smell in patients not by directly infecting neurons, but by affecting the function of supporting cells, said Sandeep Robert Datta, MD, PhD, associate professor of neurobiology at Boston-based Harvard Medical School. Dr. Datta co-authored a study published July 31 in Science Advances, and its findings identify the olfactory cell types in the upper nasal cavity as most vulnerable to SARS-CoV-2 infection.
Justin Turner, MD, PhD, associate professor of Otolaryngology-Head and Neck Surgery and medical director of Nashville-based Vanderbilt University Medical Center’s Smell and Taste Center, said May 21 that the primary cause of smell loss appears to be from an inflammatory reaction inside the nose that can lead to a loss of the olfactory neurons.
Who loses their smell?
Smell loss can be one of the first or only signs of disease and may precede symptoms such as cough and fever, Dr. Turner said, citing spring data from VUMC’s Smell and Taste Center.
Will COVID-19 patients get their sense of smell back?
Loss Of Smell Can Affect Your Health
Unlike sight or hearing, losing your sense of smell may not seem all that serious. However, Glatter said it can cause significant health issues.
It can be devastating to put it lightly. Patients with preexisting mental illness such as depression or anxiety can experience worsening of symptoms, he said. Those with no prior history of mental illness may experience feelings of anxiety, depression, or isolation.
Also, the ability to detect odors is critical for detecting hazards in our environment.
Glatter said that while the sense of smell is intimately associated with experiencing pleasure in our lives, smell is also critical for detecting danger such as smoke from a fire, toxic fumes, or even bad odors from spoiled food.
The sense of smell is integral to our safety by acting as a warning system, but also functions to give us pleasure in everyday life, he said. This includes eating, drinking, enjoying the fragrance of a bouquet of flowers, or simply the aroma of nature itself.
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The Good News Is That Various Studies Have Suggested That For People Whose Olfactory Perception Has Been Damaged After A Viral Infection Repeated Short
The way we sense odours is through a cluster of nerve cells called olfactory sensory neurons, which are located high up at the back of the nose in a structure called the olfactory bulb. These neurons have tiny hair-like projections which extend out into the mucous-covered nasal lining and respond to odour molecules that we breathe out through our noses.
Early in the pandemic, scientists feared that SARS-CoV-2 might be triggering smell loss by infecting these olfactory neurons and then making its way into the brain, where it might cause lasting damage. Further research revealed that these neurons lack the ACE2 receptors the virus uses to infect cells, but they are found on support cells in the nasal lining which interact with these neurons.
Accelerating Smell And Taste Recovery After Covid
Many children whove contracted COVID-19 experience changes in their sense of smell while the virus is active in their bodies and for some time afterward. Older children are the most likely to notice and verbalize this change. They may say their favorite foods dont smell the same or taste as good as they used to. As humans, our ability to perceive flavors depends mostly on our sense of smell when olfaction is altered, taste is affected.
While there are not yet any clinically-approved methods to reactivate a childs sense of smell after COVID-19, there is evidence that shows olfactory training to be helpful in speeding recovery from smell loss due to other causes.
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Immune Response And The Brain
While the mechanism behind the loss of smell and taste is still unknown, Desai says that the rigorous immune response and cytokine storm could be causing collateral damage to organs.
There are studies from spinal fluid showing abnormal proteins suggesting COVID infects multiple organs, including kidney, the heart, and the brain, says Desai. Everything in COVID is an acute infection, but I think some people have lingering organ damage from the immunological process causing symptoms. So, loss of smell is almost like a neurological symptom.
Desai suspects that there is damage to brain areas involved in how we sense odors and that it could be that people do not lose the physical ability to detect scents, but rather, that their perception of scent is affected.
The damage to organs after infection with the virus can lead to the lingering effects observed in COVID long-haulers. While its too early to confirm if the loss of smell and taste continues after post-infection, it could be a clue as to why some patients have lasting neurological and psychiatric symptoms such as brain fog.
How Quickly Do The Impaired Senses Return
For most people, smell, taste and chemesthesis recover within weeks. In a study published last July, 72% of people with COVID-19 who had olfactory dysfunction reported that they recovered their sense of smell after a month, as did 84% of people with taste dysfunction. Claire Hopkins, an ear, nose and throat consultant at Guys and St Thomas Hospital in London, and her colleagues similarly observed a speedy return of the senses: they followed 202 patients for a month, and found that 49% reported complete recovery over that time, and a further 41% reported an improvement.
But, for others, the symptoms are more serious. Some people whose senses do not return right away improve slowly over a long period and this can have consequences, says Hopkins. As a person regains their sense of smell, odours often register as unpleasant and different from how they remembered them, a phenomenon called parosmia. Everything smells rancid to these people, says Hopkins, and the effect can last for months. This might be because the olfactory sensory neurons are rewiring as they recover, she says.
Other patients remain fully anosmic for months, and it isnt clear why. Hopkins suggests that, in these cases, the coronavirus infection might have killed the olfactory sensory neurons.
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/7what Are The Signs You Need To Look Out For
As a single sign, loss of smell and taste can be rather difficult to mark as a sole COVID sign. It can also present to some extent in some cases of flu, sinus and nasal congestion. If you suspect COVID-19 or have been exposed to the virus in any way possible, look out for the following signs
-An impaired sense of smell all of a sudden
-Experiencing gastrointestinal difficulties
Coronavirus And The Heart
The findings also offer intriguing clues into COVID-19-associated neurological issues. The observations are consistent with hypotheses that SARS-CoV-2 does not directly infect neurons but may instead interfere with brain function by affecting vascular cells in the nervous system, the authors said. This requires further investigation to verify, they added.
The study results now help accelerate efforts to better understand smell loss in patients with COVID-19, which could in turn lead to treatments for anosmia and the development of improved smell-based diagnostics for the disease.
Anosmia seems like a curious phenomenon, but it can be devastating for the small fraction of people in whom its persistent, Datta said. It can have serious psychological consequences and could be a major public health problem if we have a growing population with permanent loss of smell.
The team also hope the data can help pave inroads for questions on disease progression such as whether the nose acts as a reservoir for SARS-CoV-2. Such efforts will require studies in facilities that allow experiments with live coronavirus and analyses of human autopsy data, the authors said, which are still difficult to come by. However, the collaborative spirit of pandemic-era scientific research calls for optimism.
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Olfactory Loss From Covid
The Centers for Disease Control and Prevention named new loss of taste or smell one of the most common symptoms of COVID-19 infection. The UC San Francisco Otolaryngology Head and Neck Surgery team continues to research and treat olfactory loss in people infected with COVID-19 and has published three studies on this topic.
Complete and incomplete smell sensitivity impairment are widely reported indicators among the many symptoms of COVID-19 infection. Quality of life can be substantially impacted by the loss of taste and smell, with possible effects including depression, loss of appetite, and safety risks from lack of awareness of gas leaks, smoke or spoiled food. The path to recovery of taste and smell varies widely among affected individuals.
Identifying the cause
The loss of smell observed in COVID-19 infections is thought to be caused by direct viral injury to the chemosensory system, which is different from the mechanism seen in a typical cold or upper respiratory infection , said Lauren T. Roland, MD, head and neck surgeon at UCSF and co-author of the studies.
Since taste relies on olfaction, Loftus said, taste loss may be present because of smell loss, but further research is needed to determine how COVID-19 affects taste receptors on the tongue and sensory nerves.
Focusing on patient outcomes
To learn more:
Can Loss Of Taste Or Smell Be Something Other Than Covid
Weve all been there. You arent feeling well and you notice that you cant taste or smell anything. Many things can cause this its not just COVID-19. Whatever the cause, the reason for losing the sense of taste or smell often has to do with abnormalities on the surfaces of the nose or tongue or the nerves supplying those surfaces. Fortunately, the most common causes of loss of smell and taste usually get better with time. Here are seven things other than COVID-19 that can cause a loss of taste and smell.
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/7what Does The Loss Of Smell Or Taste Feel Like
Statistics suggest that nearly 40% of COVID patients experience a change or altered loss of smell and taste. In some cases, it can affect the senses altogether. For some people, the changed sense of smell can be so overpowering, it can change the way normal scents and foods taste.
Spices, sweets, sour things can taste iffy and unappealing. If it continues for a while, it can also make the person averse to eating and score low on nutrition, since changing food tastes can make them experience a loss of appetite as well.
In many cases, a loss of smell can also lead to signs of lasting damage. The longer it lasts, more of a psychological manifestation it turns into.
Yet, no matter how disturbing it can be, anosmia and hyposmia can be a sign of healthy recovery.
How Long Can Long
When it comes to COVID-19, how long is long-term? The answer is unknown. Though it seems like a very long time since the pandemic began, COVID-19 only began spreading widely in early 2020, and the vast majority of people who have had the disease are only a year or less into their recovery.
It will take longer to understand what is next for patients who have recovered from COVID-19 and who still have resulting health problems.
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Can The Vaccine Make Me Lose My Sense Of Smell Or Taste
Some people are also concerned about whether the vaccine itself can cause a loss of taste or smell. Since there is no coronavirus in the vaccine, the vaccine cannot cause a loss of taste or smell.
While some of the symptoms after getting the COVID-19 vaccine are similar to those caused by infection, like fever and muscle aches, those symptoms are due to your immune system reacting to the vaccine. These symptoms are actually a good sign they mean that your immune system is learning to recognize the virus and can help prevent infection in the future.
If you develop a new loss of taste or smell after getting the vaccine, it is likely because you were exposed to COVID or another virus shortly before or after getting the vaccine. It takes a couple of weeks for the vaccine to fully stimulate your immune system, so it is still possible to get sick from COVID-19 during that time.
Covids Toll On Smell And Taste: What Scientists Do And Dont Know
One treatment for survivors of COVID-19 who have lost their sense of smell is ‘smell training’, in which they relearn prescribed scents, such as those of roses and lemons.Credit: Christine E. Kelly
Early in the COVID-19 pandemic, it emerged that many people infected with the SARS-CoV-2 virus were losing their sense of smell even without displaying other symptoms. Researchers also discovered that infected people could lose their sense of taste and their ability to detect chemically triggered sensations such as spiciness, called chemesthesis.
Almost a year later, some still havent recovered these senses, and for a proportion of people who have, odours are now warped: unpleasant scents have taken the place of normally delightful ones. Nature surveys the science behind this potentially long-lasting and debilitating phenomenon.
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