Isolated arrhinia is a very rare condition present at birth in which a baby is born without an external nose and usually without the normal nasal passages. Early signs of isolated arrhinia are usually obvious at birth, and breathing and feeding can be hard because newborns normally breathe through the nose. Many living with isolated arrhinia also have changes in the sinuses, eyes, or puberty timing, but features can vary from one child to another. Treatment focuses on keeping the airway open, supporting feeding, and planning reconstructive care over time, often with a team that includes ear, nose, and throat, craniofacial, and pediatric specialists. The outlook depends on how severe the airway and associated features are, but survival is possible with prompt medical care and ongoing support.
How many people live with Isolated arrhinia?
Isolated arrhinia, which means being born without a nose, is so rare that exact counts are not available. Orphanet classifies it as affecting fewer than 1 in 1 million people, which suggests fewer than about 8,100 people worldwide (Orphanet, 2024) and fewer than about 340 people in the United States (Orphanet, 2024).
Overview
Isolated arrhiniaSymptoms
Isolated arrhinia is a rare birth condition where a baby is born without an external nose, often with narrowed or missing nasal passages. Many with isolated arrhinia also have related facial features that can affect breathing, feeding, and smell.
Outlook and prognosis
Outlook in isolated arrhinia depends mainly on breathing, feeding, and any related eye or brain differences. Newborns may need urgent airway support, and later many benefit from staged facial reconstruction. Lifespan can be good when serious associated problems are limited.
Causes and risk factors
In isolated arrhinia, the underlying cause is often unknown. Rare gene changes, including SMCHD1, have been linked in some people, and these changes may be new rather than inherited. No clear lifestyle or environmental risk factors are known.
Genetic influences
Genetics can be important in isolated arrhinia, but the cause is still unclear for many families. Some cases are linked to changes in genes involved in early facial development, while others happen without a known genetic variant.
Diagnosis
Isolated arrhinia is usually suspected at birth from the baby's facial features and breathing problems. Doctors confirm the diagnosis of isolated arrhinia with a physical exam, imaging findings such as CT or MRI, and sometimes genetic tests.
Treatment and drugs
Treatment for isolated arrhinia focuses on breathing, feeding, and facial reconstruction. Many living with isolated arrhinia need early airway support, then staged surgery to create nasal passages and build an outer nose, with long-term craniofacial and ENT care.
Symptoms
Isolated arrhinia is usually noticed at birth because the outer nose and the usual nasal openings do not form normally. For many people with isolated arrhinia, the main day-to-day issues relate to breathing, feeding in early life, and a reduced sense of smell. The early features of isolated arrhinia are often obvious on exam, but their practical impact can vary depending on whether any nasal passage is present and whether nearby facial structures are also affected. Some people have only the nasal difference, while others have additional changes in nearby tissues or bones.
The outer nose is missing or is severely underdeveloped from birth. This is the defining feature of isolated arrhinia and is often visible right away.
The nostrils and the internal passages behind them may be absent or closed. Because air cannot move through the nose in the usual way, many people with isolated arrhinia rely mainly on mouth breathing.
Breathing can be difficult in newborns, especially during sleep, crying, or feeding. Some babies need urgent airway support because infants naturally prefer to breathe through the nose.
Feeding may be hard in early life because sucking, swallowing, and breathing have to work together. Babies may tire quickly, cough, or struggle to finish a feed.
How people usually first notice Isolated arrhinia?
How isolated arrhinia is first noticed is usually at birth, when a baby is born without an external nose or with a very underdeveloped nose, a difference that is immediately visible to families and doctors. In the first hours or days of life, many living with isolated arrhinia also have trouble breathing and feeding because newborns normally rely heavily on breathing through the nose. Doctors often then look for related features, such as absent or narrowed nasal passages and sometimes differences in the eyes, sinuses, or facial structure, although these can vary from one child to another.
Types of Isolated arrhinia
No distinct types of Isolated arrhinia are widely recognized.
Can I slow down the onset of symptoms?
No. Isolated arrhinia, which means a baby is born without a nose, develops before birth, so there is no evidence that lifestyle changes or medical treatment can meaningfully delay when it starts or prevent it after conception. While research is still trying to better understand the genes involved, early care from an experienced team can still make a real difference in breathing, feeding, hearing, and planning for future treatment.
What genetics can tell you about symptoms
In isolated arrhinia, genetic testing can sometimes find changes in genes involved in early facial development, especially SMCHD1, and this may help explain why the nose does not form normally and why some people also have differences in smell, breathing, or nearby facial structures. Even so, genetics usually cannot predict with confidence exactly which symptoms will appear, how severe they will be, or whether other features, such as delayed puberty, will also be present. What genetics can tell us most clearly is that the condition begins very early before birth, while the exact day-to-day pattern can vary from one person to another.
Causes and risk factors
Many families want to understand the causes of isolated arrhinia as soon as they hear the diagnosis. Isolated arrhinia develops very early in pregnancy when the nose does not form as expected. One known cause is a change in the SMCHD1 gene, and this change is often new rather than inherited. Researchers are still learning how these pieces fit together. No clear lifestyle, environmental, or pregnancy exposure has been proved to cause isolated arrhinia, and family history is uncommon.
What are the most common causes or risk factors?
Isolated arrhinia usually starts very early before birth, when the nose does not form the usual way, and in some people this has been linked to a change in a gene called SMCHD1 that helps guide early development. Most cases seem to happen out of the blue rather than being clearly passed down through families. There are no well-proven non-genetic risk factors, and it is not thought to be caused by anything a parent did or did not do during pregnancy.
Environmental and biological risk factors
Because isolated arrhinia is extremely rare, the known risk factors for isolated arrhinia are limited. What doctors do know is that it begins very early in pregnancy, when the nose and center of the face are forming. Researchers are still exploring how outside influences interact with our inner biology.
Isolated arrhinia appears to start during the first weeks of pregnancy, often before pregnancy is recognized. Disruptions during this narrow stage can have a large effect on how the nose forms.
The tissues that build the center of the face must grow, separate, and line up in a precise way. Biological disturbances in this process can increase the chance of isolated arrhinia.
Early growth signals in the developing baby guide where nasal structures should form. If these signals are altered, the usual nasal structures may not develop as expected.
No single environmental exposure has been consistently linked to isolated arrhinia. Still, doctors consider harmful exposures in very early pregnancy as possible contributors to rare facial developmental differences, although proof is limited.
Genetic risk factors
For families wondering why isolated arrhinia happens, genetics seem to explain at least some cases. Changes in a gene called SMCHD1 are the clearest known link, but many people with isolated arrhinia still do not have a single confirmed genetic answer. Most cases happen for the first time in one child rather than being clearly passed down through a family, which is part of why the genetic causes of isolated arrhinia can be hard to pin down. In some cases, genetic testing can give a clearer picture of your personal risk.
SMCHD1 changes: Changes in SMCHD1 are the best-known genetic finding linked with isolated arrhinia. This gene helps control early development, so a change can disrupt how the midface and nose form before birth. Not everyone with isolated arrhinia has an SMCHD1 change.
De novo changes: Many reported gene changes are de novo, which means they happen for the first time in the child. When this happens, parents usually do not have the condition and did not pass it on in the usual way. That often makes the chance of it happening again low, though not always zero.
Family history: A family history of isolated arrhinia is uncommon, but it can matter when a parent carries a related genetic change. If a parent does carry that change, the chance of passing it on is higher than in the general population. A genetics specialist can explain what that may mean for future pregnancies.
Unknown genes: Many people with isolated arrhinia still have no confirmed gene change on current testing. This suggests that other genes, or sometimes small chromosome changes, are likely involved in at least some cases. A normal test result does not rule out a genetic cause.
Lifestyle risk factors
Because isolated arrhinia is present from birth, lifestyle habits do not cause it, but daily habits can still influence breathing comfort, airway care, sleep quality, communication, and overall health. In practice, how lifestyle affects isolated arrhinia depends on the person’s airway anatomy, any reconstructive treatment, and associated feeding or speech challenges. The most helpful habits are those that support safe breathing, good nutrition, steady sleep, and consistent follow-up with rehabilitation or surgical teams.
Daily nasal or airway hygiene routines recommended by the care team can reduce crusting, dryness, and blockage around reconstructed passages or alternative airways. Good hydration and careful humidification may also make breathing more comfortable and lower the chance of irritation-related symptoms.
Smoking or vaping can worsen airway irritation, increase mucus, and make breathing discomfort more noticeable in someone with isolated arrhinia. Avoiding tobacco and nicotine products is one of the clearest lifestyle risk factors for isolated arrhinia because irritated tissues may heal less well after procedures and be more prone to inflammation.
Poor sleep routines can magnify daytime fatigue and may make existing breathing or airway-management problems harder to cope with. A regular sleep schedule and prompt evaluation of snoring, restless sleep, or pauses in breathing may help reduce complications related to sleep-disordered breathing.
Eating patterns that do not meet calorie or protein needs can slow recovery after surgery and make it harder to maintain strength, growth, or immune function. If feeding is difficult, working on texture choices, meal pacing, and swallowing strategies can directly improve safety and nutrition.
Risk prevention
Isolated arrhinia is a very rare condition present at birth in which the external nose does not fully form. In most families, there is no proven way to prevent isolated arrhinia itself, because it usually happens unpredictably and is not caused by anything a parent knowingly did. When people ask whether isolated arrhinia can be prevented, the honest answer is usually no, but some steps may help lower the risk of birth defects in general and support a healthier pregnancy. Different people need different prevention strategies—there’s no single formula.
If there is a family history of facial birth differences or a known genetic condition, meeting with a genetics specialist before pregnancy may help clarify recurrence risk. This cannot reliably prevent isolated arrhinia, but it can guide testing and family planning decisions.
Good control of diabetes, thyroid disease, and other long-term conditions before conception may lower the overall risk of congenital differences. A preconception visit can also help review nutrition, weight, and any health issues that could affect early fetal development.
Some medicines can raise the risk of birth defects if taken during early pregnancy. Reviewing prescriptions, over-the-counter drugs, supplements, and acne treatments with a clinician before trying to conceive can help avoid preventable exposures.
Alcohol, smoking, recreational drugs, and certain workplace or environmental chemicals can interfere with fetal development. Avoiding these exposures during pregnancy is sensible even though no specific exposure has been proven to cause isolated arrhinia.
Can you prevent Isolated arrhinia?
No, isolated arrhinia, a very rare condition where a baby is born without a fully formed nose, cannot usually be prevented with anything a parent did or did not do. It seems to happen very early in pregnancy, and in most cases there is no known, proven way to stop it from happening. General healthy pregnancy steps are still important for overall health, but they have not been shown to specifically prevent isolated arrhinia.
Transmission
Isolated arrhinia is not infectious, so it cannot be caught from another person through the air, touch, blood, sex, or everyday contact. Instead, it is a very rare condition present from birth, and the genetic transmission of Isolated arrhinia appears to be uncommon.
In many living with Isolated arrhinia, the condition seems to happen for the first time during early development in pregnancy rather than being passed down from a parent. A few cases have been linked to gene changes, but because so few families have been studied, how Isolated arrhinia is inherited is still not fully understood.
When to test your genes
For isolated arrhinia, genetic testing is usually considered after the condition is recognized at birth or on prenatal imaging, not for routine early screening. Testing can look for changes such as SMCHD1 variants and may help guide evaluation for related eye, puberty, or reproductive differences.
Diagnosis
Isolated arrhinia is usually recognized very early because a baby is born without the external nose and nasal passages. The diagnosis is based first on the physical features doctors can see, then confirmed with imaging and often genetic testing to understand the full picture and check for related differences. Getting a diagnosis is often a turning point toward answers and support, especially when feeding, breathing, and future treatment planning need careful coordination.
Doctors diagnose isolated arrhinia by examining the face, nose area, and airway right after birth. They also look for whether the condition appears limited to the nose or if there are signs that other parts of the face may be involved.
CT or MRI scans show whether nasal bones, nasal passages, and nearby facial structures are missing or formed differently. These imaging findings help confirm the diagnosis of isolated arrhinia and help surgeons plan care.
Doctors assess how well the baby is breathing and whether air can pass through the upper airway. This is important because newborns normally rely heavily on nasal breathing, so blockage or absent nasal passages can cause urgent problems.
The care team checks for trouble with sucking, swallowing, and feeding safely. These exams help identify practical day-to-day issues that often need support soon after birth.
How is Isolated arrhinia diagnosed?
Isolated arrhinia is usually diagnosed because a baby is born without a normally formed nose, and doctors can often suspect it before birth on a pregnancy ultrasound, sometimes with a more detailed scan if needed. After birth, the diagnosis is confirmed with a physical exam and imaging tests such as CT or MRI scans to see how the nose, air passages, and nearby face structures developed and to help plan care. Genetic testing may also be offered, since some people with isolated arrhinia have a related gene change, but the diagnosis mainly comes from the exam and imaging findings.
Stages of Isolated arrhinia
Isolated arrhinia does not have defined progression stages. That is because it is a rare condition present from birth, not an illness that typically moves through early, middle, and late phases over time. Doctors usually start with a conversation about breathing, feeding, and any related differences seen at birth, followed by a physical exam and imaging tests to show how the nose and nearby structures formed. Monitoring then focuses on day-to-day needs, growth, and planning care with specialists, rather than tracking stages, and this is often part of how isolated arrhinia is diagnosed and followed over time.
Outlook and prognosis
The outlook for isolated arrhinia varies mainly with how well breathing and feeding can be stabilized in infancy and whether any other craniofacial, eye, or brain abnormalities are present. In the newborn period, the greatest risk is respiratory distress because babies are obligate nasal breathers, so early airway support and careful multidisciplinary care are critical. If the condition is truly isolated and the airway is managed successfully, many children can survive into adulthood, and long-term prognosis is often shaped more by reconstructive needs, speech and swallowing issues, and psychosocial impact than by progressive disease. Multiple staged surgeries are commonly needed, and functional and cosmetic results can improve over time, although reconstruction is complex and outcomes are variable. Mortality is not well defined because isolated arrhinia is extremely rare, but deaths are most likely to occur in severe neonatal cases, especially when diagnosis is delayed or additional major anomalies are present.
Long-term effects
For many living with isolated arrhinia, the long-term picture depends mainly on breathing, feeding, facial development, and whether hormone-related differences are also present. Many of the most serious challenges are strongest in infancy and early childhood, while other effects can continue into the teen and adult years. Long-term effects vary widely, and some people have additional head and face differences while others do not. When considering the long-term effects of isolated arrhinia, doctors usually look at day-to-day function as well as growth and development over time.
Breathing through the normal nasal passage is not possible, so many people rely on mouth breathing long term. This can make sleep harder, increase noisy breathing, and in some cases raise the risk of sleep-disordered breathing.
In babies, feeding may take longer and can be tiring because breathing and sucking are harder to coordinate. Over time, some children may have slower early weight gain, especially if airway problems are significant.
Most people with isolated arrhinia have little or no sense of smell throughout life. This can also blunt flavor perception, so food may seem less vivid even when taste buds work normally.
The usual airflow through the nose helps shape certain speech sounds, so speech can sound different. Some children also have related mouth or palate differences that add to speech difficulties over time.
How is it to live with Isolated arrhinia?
Living with isolated arrhinia, a condition present from birth in which the external nose and normal nasal passages are absent, can affect some of the most basic parts of daily life: breathing, sleeping, eating, speaking, and sensing smell. Many living with isolated arrhinia need ongoing care from several specialists and may go through surgeries or other procedures over time, while also coping with visible facial differences that can bring unwanted attention, social stress, or questions from others. For families and close friends, daily life often includes extra medical appointments, practical support, and emotional advocacy, but with the right care and support, many people with isolated arrhinia build routines, relationships, and a strong sense of identity around far more than the condition itself.
Treatment and drugs
Treatment for isolated arrhinia is highly individualized and usually focuses first on safe breathing, then on reconstruction and day-to-day function. In a newborn, this can mean urgent airway support, sometimes including a breathing tube or tracheostomy, especially if breathing is hard during feeding or sleep. Over time, care often involves a team that may include ear, nose, and throat doctors, craniofacial surgeons, and other specialists who plan staged surgery to help create a nasal passage and improve facial structure. There is no medicine that can regrow a missing nose, but drugs may still be used for related needs such as pain control, infection prevention around surgery, or anesthesia during procedures. Not every treatment works the same way for every person, so people with isolated arrhinia often need long-term follow-up as needs change with growth.
Can you cure Isolated arrhinia?
No, there is no cure for isolated arrhinia at this time. Because people are born without a fully formed nose, treatment focuses on helping with day-to-day needs and improving how the nose and face work and look, often with surgery done in stages over time. Care may also include support for breathing, feeding, speech, and other related problems, depending on each person’s needs.
Non-drug treatment
Day-to-day care for people with isolated arrhinia usually centers on breathing, feeding, communication, and long-term facial reconstruction rather than medicines. In a newborn, this can mean urgent help with the airway and tube feeding at first, followed later by planned surgery and supportive therapies as a child grows. Managing this condition often takes a team that may include ear, nose, and throat surgeons, craniofacial specialists, feeding experts, speech therapists, and mental health professionals.
Breathing support is often the first priority in isolated arrhinia, especially in newborns who may struggle to move air well through the upper airway. Some need careful positioning, a breathing tube, or a tracheostomy so air can reach the lungs safely.
Many living with isolated arrhinia need help with feeding because sucking and coordinating breathing can be hard, especially early on. This may involve feeding therapy, special bottles, or temporary tube feeding to support growth.
Facial reconstruction is a main non-drug treatment for isolated arrhinia, but it is usually staged over time rather than done all at once. Surgeons may create or widen an airway, rebuild the external nose, and address nearby facial structures as the child grows.
Speech and resonance can be affected when the nasal passages and nearby structures do not develop typically. Structured programs, like speech therapy, can help with clearer sounds, breath control, and communication as language develops.
Your genes may have an impact on how drugs work for you
For people with isolated arrhinia, there is no well-established evidence that the gene changes linked to this condition consistently change how common medicines work. In day-to-day care, medicine choices are usually based more on age, breathing needs, feeding issues, planned surgery, and overall health than on genetic test results. That means doctors usually adjust treatment by watching how someone responds in real life, rather than using a gene-based drug guide for this condition.
Pharmacological treatments
There is no medicine that can correct isolated arrhinia itself, because the condition is a structural difference present from birth. Treatment usually focuses on related problems, especially hormone replacement when the pituitary gland is underactive, and medicines for symptoms such as nasal dryness or infection risk if needed. In many living with isolated arrhinia, the drug plan depends on which associated issues are present rather than on the absent nose alone. This also means the best medications for isolated arrhinia can differ from one person to another.
Some people with isolated arrhinia also have pituitary hormone deficiencies, which can affect growth, puberty, thyroid function, stress response, or water balance. Medicines may include growth hormone, levothyroxine, hydrocortisone, sex hormone therapy such as estrogen or testosterone, or desmopressin when needed. Doctors choose these based on blood tests, symptoms, and age.
Hydrocortisone or similar steroid replacement is used if the body does not make enough cortisol. This can be especially important during illness, injury, or surgery, when the body needs extra stress hormone support.
Levothyroxine is used when isolated arrhinia is linked with low thyroid hormone levels from pituitary problems. Replacing thyroid hormone can help with energy, growth, body temperature, and day-to-day functioning.
Growth hormone may be prescribed for children who have poor growth due to pituitary deficiency. Early treatment can support height gain and overall development when testing confirms the need.
Genetic influences
For many families, the hardest part of isolated arrhinia is not having a clear answer for why the nose did not form normally before birth. Research suggests genetics can play a role, and in some people with isolated arrhinia, doctors find changes in a gene called SMCHD1, which helps guide early facial development. A change in a gene can sometimes affect health, but not every person with isolated arrhinia has a detectable genetic change, so the genetic causes of isolated arrhinia are still being worked out. Most reported cases seem to happen for the first time in a family rather than being clearly inherited, although inherited cases may occur. Because this condition is so rare, a genetics specialist can help review test results and explain what they may mean for future pregnancies.
Is Isolated arrhinia genetic?
Genetics can be important in isolated arrhinia, but the cause is still unclear for many families. Some cases are linked to changes in genes involved in early facial development, while others happen without a known genetic variant.
Having a genetic risk is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are common across the general population. Most do not have a direct effect on health and are simply part of normal human diversity. For many genes, having a variant associated with a condition suggests a possible link rather than a certain diagnosis, especially when several genes and environmental factors play a role. In some situations, though, a single well-understood variant in a particular gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
People living with isolated arrhinia usually need care that focuses first on breathing, feeding, and later reconstructive surgery, rather than a long-term medicine plan aimed at the condition itself. Genetic testing may sometimes find a change in a gene involved in early facial development, which can help confirm the diagnosis, look for related health concerns, and guide family counseling. Genetics is only one factor, and for isolated arrhinia there is currently no well-established gene-based rule for choosing a specific drug or dose. Medicines used around surgery or for related issues, such as infection, reflux, or hormone problems, are usually chosen based on age, body size, overall health, and the exact medical need. For families wondering how genetics affect treatment for isolated arrhinia, the main benefit of genetic results is usually better diagnosis and care planning, not predicting which medicine will work best. If isolated arrhinia happens along with other hormone, growth, or developmental differences, treatment may be adjusted to those findings rather than to isolated arrhinia alone.
Interactions with other conditions
For many living with isolated arrhinia, the biggest day-to-day concerns are breathing, feeding, sleep, and the facial differences that can affect hearing, speech, and dental care over time. Isolated arrhinia does not usually have strong disease-to-disease interactions in the way some chronic inflammatory or autoimmune conditions do, because it is a rare condition present from birth rather than an illness that spreads through the body. Still, other airway problems, frequent respiratory infections, or reflux can make breathing problems in isolated arrhinia harder to manage, especially in infants and young children. The presence of another illness does not always mean isolated arrhinia will worsen, but it can make care more complex and may increase the need for coordinated follow-up with ear, nose, and throat, craniofacial, dental, and breathing specialists. Some people with isolated arrhinia may also be evaluated for related hormone or eye concerns if their doctors suspect a broader pattern rather than a truly isolated finding. Because this is such a rare condition, care is usually centered on the specific problems a person has rather than on a predictable set of disease interactions.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Isolated arrhinia?
In newborns, the main conditions that can look similar are a severe blockage behind the nose present from birth, called choanal atresia, or a very narrow nasal opening, because both can cause trouble breathing and feeding. Marked underdevelopment of the nose and some rare genetic conditions that affect the middle of the face can also resemble isolated arrhinia, so doctors usually use a physical exam and imaging scans to tell the difference.
History
People born without an external nose would have been strikingly uncommon in any era, so for most of history isolated arrhinia was known only through scattered case reports and careful physical descriptions. Early doctors focused on what they could see at birth and on the practical effects, such as trouble with breathing, feeding, and the sense of smell. For families, this could mean a newborn who seemed to struggle right away, even before anyone had a name for the condition.
As medical science evolved, descriptions became more detailed, and doctors began separating isolated arrhinia from other conditions that can affect the face and skull. That mattered because some babies have a missing or severely underdeveloped nose along with broader differences elsewhere in the body, while others have isolated arrhinia mainly affecting the nose and nearby structures. This clearer distinction helped doctors compare cases more accurately and better understand the range of features that may come with it.
By the late 19th and 20th centuries, isolated arrhinia appeared more often in the medical literature, though it remained extremely rare. Improvements in newborn care, imaging, and reconstructive surgery gradually changed what life looked like for many living with isolated arrhinia. Instead of only documenting the appearance, doctors could begin planning airway support, feeding help, hearing and smell evaluations, and later facial reconstruction in a more organized way.
In recent decades, awareness has grown through advances in prenatal imaging and genetics, which have helped explain why some cases happen and how isolated arrhinia can vary from one person to another. Not every early description was complete, yet together they built the foundation of today’s knowledge. Doctors now recognize that the early symptoms of isolated arrhinia often center on breathing and feeding in newborns, while longer-term care may involve speech, sinus, dental, and facial development concerns.
Today, the history of isolated arrhinia is still being written because so few cases have been reported worldwide. Even so, the shift from isolated case descriptions to coordinated medical care has made a real difference. Knowing this history helps explain why people with isolated arrhinia are usually cared for by a team that may include newborn specialists, ear, nose, and throat doctors, craniofacial surgeons, and genetics professionals.