Fried's tooth and nail syndrome is a rare genetic condition that mainly affects the nails and teeth. Many living with Fried's tooth and nail syndrome have nails that are very small, thickened, misshapen, or absent, and some also have missing or delayed teeth. The early signs of Fried's tooth and nail syndrome are usually noticed at birth or in childhood, and the pattern is lifelong. Not everyone will have the same experience, but Fried's tooth and nail syndrome is not usually expected to shorten life expectancy. Treatment focuses on supportive care such as regular dental treatment, replacement teeth when needed, and practical nail care.
How many people live with Fried's tooth and nail syndrome?
Published sources such as Orphanet and the NIH Genetic and Rare Diseases Information Center describe Fried's tooth and nail syndrome as extremely rare, but they do not give a current worldwide or U.S. count. Because of that, the exact number of people living with it globally or in the United States is unknown.
Overview
Fried's tooth and nail syndromeSymptoms
Fried's tooth and nail syndrome mainly affects teeth and nails. Many people have missing, small, or slow-growing nails and fewer, delayed, or unusually shaped teeth, often noticed in early childhood.
Outlook and prognosis
Life expectancy with Fried's tooth and nail syndrome is usually normal. Many people do well with dental treatment and nail care, although missing or fragile teeth and nails can cause lifelong challenges with eating, comfort, and appearance.
Causes and risk factors
Fried's tooth and nail syndrome is usually caused by a genetic change present from birth, sometimes inherited and sometimes new. Family history is the main risk factor; lifestyle and environment do not cause it.
Genetic influences
Genetics are central to Fried's tooth and nail syndrome. It is usually caused by inherited gene changes, and different variants can influence how strongly nails, teeth, hair, or sweating are affected.
Diagnosis
Diagnosis of Fried's tooth and nail syndrome usually starts with its clinical features, especially changes in the teeth and nails. Doctors may confirm it with genetic tests and, in some cases, imaging findings if needed.
Treatment and drugs
Treatment for Fried's tooth and nail syndrome focuses on everyday comfort and function. Many living with Fried's tooth and nail syndrome benefit from early dental care, such as false teeth, implants, or braces. Nail protection and follow-up can also help.
Symptoms
Teeth that come in late, look different, or are missing can affect eating, speech, and confidence, and nail changes may show up in simple tasks like buttoning clothes or opening packaging. For many people with Fried's tooth and nail syndrome, the most noticeable features involve the teeth and nails rather than overall growth or development. The early features of Fried's tooth and nail syndrome often appear in childhood, although not everyone has the same pattern or degree of change.
Some baby teeth, adult teeth, or both may never fully develop. Gaps can make biting certain foods harder and may change the way the smile looks.
Teeth that do come in may be smaller than usual or have a narrow, pointed shape. This can lead to wider spaces between teeth and may affect chewing or speech for some people.
Teeth may come in later than expected during childhood. Sometimes this is first noticed when other children of the same age have more teeth.
Fingernails and toenails may grow slowly and break, split, or wear down easily. Everyday tasks can make these changes more noticeable.
How people usually first notice Fried's tooth and nail syndrome?
Fried’s tooth and nail syndrome is usually first noticed in early childhood, when a child’s baby teeth come in late, fewer teeth appear than expected, or the teeth look small, widely spaced, or unusually shaped. At the same time, families or doctors may notice the first signs of Fried’s tooth and nail syndrome in the nails, which can look thin, brittle, slow-growing, ridged, or oddly formed from infancy or the toddler years. For many living with this condition, these changes are the earliest clues that lead to a dental visit, a genetics evaluation, or both.
Types of Fried's tooth and nail syndrome
Fried's tooth and nail syndrome is a genetic condition, but widely accepted clinical variants are not established. In practice, people with Fried's tooth and nail syndrome can have differences in how the teeth and nails are affected, yet these are not considered formal disease types. If you are looking for the variants of Fried's tooth and nail syndrome, current patient-facing and clinical descriptions generally do not separate it into recognized subtypes.
Can I slow down the onset of symptoms?
No—there is no good evidence that lifestyle changes or medicine can meaningfully delay the start of Fried's tooth and nail syndrome, because it is an inherited condition that affects how the teeth and nails form, and those changes usually begin very early in life. Good dental care, regular checkups, and treatment for nail problems may help with comfort and day-to-day function, but they do not prevent the condition from starting. Even so, early support can still make a real difference in managing problems as they come up.
What genetics can tell you about symptoms
In Fried's tooth and nail syndrome, the genetic change is closely tied to the main features people are born with or develop as they grow, especially abnormal nails and missing, small, or late-erupting teeth. Genetics can give doctors a good idea of the pattern of symptoms, but it usually cannot predict exactly how severe those changes will be, since even relatives with the same variant may be affected differently. In general, the signs begin early in life, often in childhood, because the gene change affects how teeth and nails develop from the start.
Causes and risk factors
Fried's tooth and nail syndrome is usually caused by a change in a gene called MSX1, and this change may be inherited or happen for the first time in a child. The biggest risk factor is family history, and if one parent has Fried's tooth and nail syndrome, each child has a 1 in 2, or 50%, chance of inheriting it. Other biological factors can affect how strongly it shows up, so some people have milder tooth or nail changes than others. Lifestyle and environmental factors do not cause Fried's tooth and nail syndrome, but dental care, nutrition, and nail injury can affect day-to-day problems and the early symptoms of Fried's tooth and nail syndrome. Genetic testing can sometimes clarify your personal risk.
What are the most common causes or risk factors?
Fried's tooth and nail syndrome is most often caused by an inherited change in a gene called MSX1, which helps teeth and nails develop before birth. The main risk factor is family history, since it usually runs in families and a child may inherit it from a parent who has obvious signs or only mild ones. There are no well-known lifestyle, diet, or environmental causes.
Environmental and biological risk factors
Fried's tooth and nail syndrome is a rare condition present from birth, and the known risk factors for Fried's tooth and nail syndrome are unusual compared with many other conditions. Doctors often group risks into internal (biological) and external (environmental), but no well-established triggers in either group have been confirmed for this syndrome. In practice, that means pregnancy exposures, parental age, and birth events have not been clearly shown to increase the chance of it occurring.
No specific medication, infection, chemical, radiation, or pollution exposure has been firmly linked to Fried's tooth and nail syndrome. At this time, doctors do not have a known external exposure that reliably increases the chance of the condition.
Older maternal or paternal age has not been established as a risk factor for Fried's tooth and nail syndrome. Current evidence does not support using parental age alone to estimate risk.
Common pregnancy illnesses or chronic health conditions have not been clearly shown to cause Fried's tooth and nail syndrome. Doctors may still review them during an evaluation to rule out other conditions with similar findings.
Prematurity, delivery complications, and low birth weight have not been proven to trigger Fried's tooth and nail syndrome. These factors can affect health in other ways, but they are not known causes here.
Genetic risk factors
In Fried's tooth and nail syndrome, the main risk comes from an inherited gene change. The genetic causes of Fried's tooth and nail syndrome are most often linked to changes in MSX1, a gene involved in the early development of teeth and nails. The condition is usually passed down in an autosomal dominant pattern, which means one altered copy of the gene can be enough to lead to the syndrome. Risk is not destiny—it varies widely between individuals.
MSX1 changes: Changes in MSX1 can disrupt the early formation of teeth and nails before birth. This is the genetic cause most often linked to Fried's tooth and nail syndrome.
Dominant inheritance: Fried's tooth and nail syndrome is usually inherited in an autosomal dominant pattern, so one altered copy of the gene can be enough to cause it. If a parent carries the altered gene, each child has a 1 in 2 chance of inheriting it.
Family history: A family history of missing adult teeth, small nails, or slow-growing nails makes this syndrome more likely. A pattern affecting several generations is a strong clue that the risk is inherited.
New changes: Occasionally, the gene change happens for the first time in a child with no known family history. Once present, that new change can still be passed on to future children.
Variable expression: Even within the same family, one relative may have only a few missing teeth while another has more obvious tooth and nail changes. This variability can make the inherited risk harder to recognize at first.
Lifestyle risk factors
Fried's tooth and nail syndrome is an inherited condition, so lifestyle habits do not cause it. Still, how lifestyle affects Fried's tooth and nail syndrome can matter because daily habits may influence dental damage, nail trauma, infection risk, and comfort. The most useful lifestyle measures focus on protecting fragile teeth and nails and reducing complications.
Careful brushing with a soft brush, fluoride use, and regular dental cleaning can help limit decay and gum disease around abnormal or missing teeth. Poor oral care can accelerate tooth loss, pain, and difficulty eating in people with Fried's tooth and nail syndrome.
Frequent sugary foods, acidic drinks, and constant snacking can increase cavity risk and enamel wear when teeth are already structurally vulnerable. Softer, less erosive foods may also reduce pain and chewing difficulty.
Repeated picking, biting, harsh manicures, and pressure on the nails can worsen splitting, thickening, or breakage. Gentle nail care and protection during daily tasks may help preserve function and reduce discomfort.
Long exposure to water, detergents, and cleaning chemicals can dry and weaken brittle nails and surrounding skin. Gloves and moisturizers may lower cracking and secondary infection risk.
Risk prevention
For people with Fried's tooth and nail syndrome, preventing the syndrome itself is usually not possible because it is a genetic condition present from birth. Prevention is mostly about lowering the chance of complications, especially tooth damage, gum disease, nail injuries, and day-to-day discomfort. Different people need different prevention strategies—there’s no single formula.
Regular dental checkups can help catch weak enamel, crowded teeth, or early decay before they become more painful or harder to treat. For many living with Fried's tooth and nail syndrome, preventing dental problems in Fried's tooth and nail syndrome is one of the most important parts of care.
Brushing twice a day with fluoride toothpaste and cleaning between the teeth can lower the risk of cavities and gum disease. If teeth are fragile or unusually shaped, a dentist may suggest gentler tools or extra fluoride protection.
Limiting sugary snacks and acidic drinks can help protect teeth that may already be more vulnerable to wear. Water, regular meals, and less frequent sipping can reduce the constant acid exposure that drives decay.
Keeping nails trimmed, clean, and dry can lower the risk of splitting, painful catching, and skin infection around the nail edges. Gloves for wet work or hands-on chores may help if nails are thin or break easily.
Can you prevent Fried's tooth and nail syndrome?
No, Fried's tooth and nail syndrome usually cannot be prevented because it is an inherited condition that people are born with. If it runs in your family, genetic counseling before pregnancy may help you understand the chances of passing it on and learn about testing options, but it cannot guarantee prevention.
Transmission
Fried's tooth and nail syndrome is not infectious, so it cannot spread through touch, kissing, coughing, blood, food, or sex. The main issue is how Fried's tooth and nail syndrome is inherited: it is usually passed from parent to child in an autosomal dominant pattern, meaning a child needs only one altered copy of the gene from either parent to have the condition.
If a parent has Fried's tooth and nail syndrome, each pregnancy usually carries a 1 in 2, or 50%, chance of passing it on. Sometimes the condition begins with a new genetic change, so a child may have it even when no one else in the family is known to be affected.
When to test your genes
Consider genetic testing when a child has missing or unusually shaped teeth together with slow-growing, thickened, or brittle nails, especially if relatives have similar features. Testing is most useful early in the dental workup, because it can confirm the diagnosis, guide dental planning, and clarify family recurrence risk.
Diagnosis
People with Fried's tooth and nail syndrome are often diagnosed when changes in the nails and teeth are noticed in childhood or early adult life. The diagnosis is usually based on these visible features and then confirmed with focused testing. Early and accurate diagnosis can help you plan ahead with confidence.
Doctors usually begin with a careful exam of the nails, teeth, hair, and skin. In Fried's tooth and nail syndrome, the combination of missing or unusually shaped nails and dental changes can strongly suggest the diagnosis.
A dentist may check for missing teeth, delayed tooth eruption, and teeth that are small or shaped differently than usual. These findings are often central to the diagnosis of Fried's tooth and nail syndrome and can also help guide dental care.
A detailed family and health history can help show whether similar nail or tooth changes run in the family. Because this condition is genetic, patterns across generations may support the diagnosis.
Genetic tests may be offered to look for a disease-causing change in a gene linked to this syndrome. A positive result can confirm the genetic diagnosis of Fried's tooth and nail syndrome, although not every family will have an identifiable result right away.
How is Fried's tooth and nail syndrome diagnosed?
Fried's tooth and nail syndrome is usually diagnosed by recognizing the typical pattern of nail changes and missing or unusually shaped teeth, often starting in childhood. A dentist or doctor will usually look at the nails and teeth, ask about family history, and use dental X-rays to see whether some adult teeth never formed. Genetic testing can sometimes help confirm the diagnosis, but doctors often make the diagnosis based mainly on the physical signs and dental findings.
Stages of Fried's tooth and nail syndrome
Fried's tooth and nail syndrome does not have defined progression stages. That is because it is usually recognized by lifelong differences in tooth and nail development, rather than by a disease that steadily moves from one stage to the next over time. Doctors usually start with a conversation about changes that have been present since childhood, such as missing teeth, slow tooth eruption, or nails that are small, thick, brittle, or unusually shaped; these may overlap with the early symptoms of Fried's tooth and nail syndrome that families first notice. Diagnosis is usually based on the pattern of physical features, dental and nail exams, and sometimes genetic testing to confirm the cause.
Outlook and prognosis
The outlook for Fried's tooth and nail syndrome is generally excellent, with normal intelligence, normal overall health, and a normal life expectancy in most affected people. The condition is usually present from birth and tends to remain stable over time rather than causing progressive damage to major organs. Prognosis is mainly shaped by the severity of dental abnormalities and nail changes, which can affect nutrition, speech, hand function, appearance, and quality of life but are often manageable with dental care, prosthetics, and supportive treatment. Mortality is not thought to be increased by the syndrome itself. Long-term outcomes are usually best when children receive early evaluation by dentistry, genetics, and other specialists to address functional and cosmetic concerns.
Long-term effects
For many living with Fried's tooth and nail syndrome, the main long-term effects involve the nails and teeth rather than overall growth or life span. These changes are usually lifelong and can look quite different from one person to another, even within the same family. It’s important to remember that long-term doesn’t always mean progressive, and many features stay fairly stable over time.
Nails may stay very small, thickened, misshapen, brittle, or absent through life. For many, this can mean fingertips and toes stay more sensitive, and trimming or everyday hand use may be awkward at times.
Teeth may be missing, small, widely spaced, or shaped differently, and these features often continue from childhood into adulthood. In some people, the early symptoms of Fried's tooth and nail syndrome are first noticed when baby teeth or adult teeth do not come in as expected.
Missing or unusually shaped teeth can make biting and chewing harder, especially with firm foods. Some may also find that speech sounds are less clear if several front teeth are absent.
Visible nail and tooth differences can affect confidence, especially during school years, work, or social situations. Everyone’s path looks different, and the emotional effect may be mild for some people and much more noticeable for others.
How is it to live with Fried's tooth and nail syndrome?
Living with Fried tooth and nail syndrome often means managing the very visible, everyday effects of underdeveloped or missing nails and teeth, which can affect comfort, eating, speech, hand function, and self-confidence. Many living with this condition need regular dental care, and some may benefit from dental prosthetics or cosmetic and practical nail care to make daily tasks easier and reduce discomfort. Because appearance can draw unwanted attention, emotional support matters too, and family members or other close people are often part of appointments, practical care, and encouragement.
Treatment and drugs
Fried's tooth and nail syndrome does not have a cure, so treatment focuses on the tooth and nail changes and on making daily life easier. People with Fried's tooth and nail syndrome may need regular dental care early on, and treatment can include protecting weak teeth, replacing missing teeth with dentures or other dental devices, and later considering options such as implants if appropriate. Supportive care can make a real difference in how you feel day to day, and many living with Fried's tooth and nail syndrome also benefit from nail care to reduce splitting, breakage, discomfort, and skin irritation around the nails. Because the early symptoms of Fried's tooth and nail syndrome can vary from one family to another, care is usually tailored by a dentist and other specialists, and genetic counseling may help families understand what to expect.
Can you cure Fried's tooth and nail syndrome?
No, there is no cure for Fried's tooth and nail syndrome at this time because it is a genetic condition that people are born with. Treatment focuses on managing the effects in daily life, such as dental care to protect or replace missing or weak teeth and simple care to help with fragile or abnormal nails. These treatments can improve comfort, appearance, and function, but they do not make the condition go away.
Non-drug treatment
Daily life with Fried's tooth and nail syndrome often centers on eating, speaking, grooming, and protecting sensitive nails rather than taking medicine. Care usually focuses on dental work, nail care, skin and foot support, and practical therapies that help with comfort and function. Managing this condition often means building care around the problems that affect you most, since signs and needs can vary from one person to another. For many, the most important treatment for Fried's tooth and nail syndrome is steady supportive care over time.
Missing, small, or fragile teeth can make chewing and smiling feel harder, so regular dental care is a main part of treatment. Dentists may use crowns, bridges, dentures, or implants when appropriate to improve comfort, bite, and appearance. Orthodontic care may also help in some people if tooth position is part of the problem.
Careful brushing, flossing, and regular cleanings help protect the teeth that are present and lower the risk of decay and gum disease. This matters even more when teeth are fewer, oddly shaped, or harder to clean. Some may find that more frequent dental visits make daily eating and speaking easier over time.
Missing teeth can make certain foods difficult to chew, especially crunchy meats, raw vegetables, or hard breads. A dentist or dietitian can suggest softer, high-protein foods and ways to keep meals balanced without causing pain or frustration. If a child is struggling with growth, nutrition support becomes especially important.
When teeth are missing or shaped differently, some sounds may come out less clearly. Speech therapy can help improve clarity and confidence, especially in school, work, or social settings. Supportive therapies can make everyday communication feel less tiring and more natural.
Your genes may have an impact on how drugs work for you
For people living with Fried's tooth and nail syndrome, care usually focuses on dental treatment, mouth care, and skin or nail support rather than long-term medicines, so inherited changes are not known to play a major role in how the condition responds to drugs. In day-to-day life, this means treatment is more often shaped by practical needs, such as replacing missing teeth or managing fragile nails, than by gene-based medicine choices. If medicine is needed for a related issue, like pain, infection, or dental procedures, doctors usually choose it based on the person’s age, overall health, and symptoms, not because of this syndrome itself.
Pharmacological treatments
For Fried's tooth and nail syndrome, there is no specific medication that corrects the underlying genetic change or regrows missing teeth and nails. In day-to-day care, medicines are mainly used when problems linked to the condition come up, such as dental pain, gum inflammation, or infection. Medication is often just one chapter of treatment, alongside dental restorations, regular dental follow-up, and practical nail care. If you are looking for treatment for Fried's tooth and nail syndrome, the main role of drugs is symptom relief rather than changing the condition itself.
Acetaminophen and ibuprofen may be used for tooth pain, gum soreness, or discomfort after dental procedures. These medicines do not treat Fried's tooth and nail syndrome itself, but they can make eating and daily care easier.
Antibiotics such as amoxicillin, or clindamycin when penicillin cannot be used, may be prescribed if a true dental infection develops. They are used only when there are signs of infection, not as routine long-term treatment.
Local anesthetics such as lidocaine are often used during dental work to control pain. This can be especially helpful for many living with Fried's tooth and nail syndrome who need fillings, crowns, dentures, or other supportive care.
Medicines such as terbinafine or topical antifungal lacquers are only considered if a separate fungal nail infection is present. They do not treat the nail changes caused by Fried's tooth and nail syndrome itself.
Genetic influences
Missing teeth that never come in, small or oddly shaped teeth, or nails that grow slowly and split easily can point to Fried's tooth and nail syndrome, and in this condition genes play a central role. Fried's tooth and nail syndrome is usually caused by a change in the MSX1 gene, which helps guide the early development of teeth and nails before birth. If others in your family have faced this condition, you’re not alone in your concern: it is typically passed down in an autosomal dominant pattern, so a parent with the gene change has a 1 in 2, or 50%, chance of passing it on in each pregnancy. Even within the same family, symptoms can vary, so one relative may have only mild nail changes while another has more noticeable missing teeth. Genetic testing and genetic counseling can help confirm the diagnosis, explain what the result means for relatives, and clarify whether early signs of Fried's tooth and nail syndrome in a child fit the same inherited pattern.
Is Fried's tooth and nail syndrome genetic?
Genetics are central to Fried's tooth and nail syndrome. It is usually caused by inherited gene changes, and different variants can influence how strongly nails, teeth, hair, or sweating are affected.
Having a genetic risk is not necessarily a diagnosis
Gene variants are a normal part of human biology and are common across the general population. Most of these variants do not directly affect health and are simply part of natural 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 are involved. In some cases, though, a single well-characterized variant in a specific gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
Because Fried's tooth and nail syndrome is a genetic condition, the main way genetics affects treatment is by helping confirm the diagnosis and guide long-term care, rather than by pointing to a specific medicine. Treatment for Fried's tooth and nail syndrome is usually supportive, such as dental planning for missing or small teeth, routine mouth care, and simple nail care to reduce discomfort or breakage. At this time, there are no widely used drugs that correct the underlying genetic change in Fried's tooth and nail syndrome, so doctors do not usually use pharmacogenetic testing to choose a medicine for it. Genetics is only one factor, and if medicines are needed for related issues like dental pain or infection, the choice is usually based on age, symptoms, allergies, and other health conditions rather than the syndrome itself. In practice, this means many living with Fried's tooth and nail syndrome may benefit most from coordinated care with a dentist, and sometimes a genetics specialist, instead of expecting a gene-based drug treatment. Genetic results can also help families understand whether others may be at risk and whether early dental support could help children with Fried's tooth and nail syndrome.
Interactions with other conditions
For many living with Fried's tooth and nail syndrome, the main day-to-day challenges come from missing or unusually shaped teeth and slow-growing, thick, or fragile nails rather than from problems affecting the rest of the body. The condition is not usually known to directly cause major diseases in organs like the heart, lungs, or kidneys, and the presence of another illness does not always mean it is related. Still, the dental changes in Fried's tooth and nail syndrome can make cavities, gum irritation, and bite problems more likely, especially if teeth are crowded, widely spaced, or do not come in as expected. Nail changes can also be mistaken for other conditions such as fungal nail infection or psoriasis, so doctors may need to sort out whether a new nail problem is part of the syndrome or something separate. In practice, someone might notice that chewing becomes harder after repeated dental infections, or that sore, damaged nails are blamed on an infection when the underlying syndrome is also playing a role. Because the early symptoms of Fried's tooth and nail syndrome can overlap with other ectodermal conditions that affect hair, skin, teeth, or nails, careful dental and medical follow-up can help make sure any additional condition is recognized and treated.
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 Fried's tooth and nail syndrome?
Other inherited conditions that affect how teeth and nails form can look similar, especially hypohidrotic ectodermal dysplasia, which often also causes sparse hair and trouble sweating, and Clouston syndrome, which usually brings more obvious hair changes. Sometimes isolated missing teeth or a separate inherited nail disorder can also be mistaken for Fried's tooth and nail syndrome, especially early on before the full pattern is clear.
History
Families and communities once noticed patterns of brittle or missing nails and teeth that came in late, were unusually shaped, or did not develop as expected. What is now called Fried’s tooth and nail syndrome was first recognized through these visible changes rather than through lab testing. In daily life, this could mean a child needing early dental care because teeth seem slow to appear, or an adult finding that thin nails split easily with routine use.
As medical science evolved, doctors began grouping these kinds of findings into better-defined conditions. Earlier reports focused on what could be seen during an exam, especially changes in teeth and nails, and some people were likely described under broader labels before Fried’s tooth and nail syndrome was separated more clearly. Not every early description was complete, yet together they helped build the picture doctors use today.
Later, researchers showed that Fried’s tooth and nail syndrome has a genetic basis, which helped confirm that the tooth and nail changes are linked rather than occurring by chance. This also improved diagnosis for families who had long noticed similar features across generations. Today, the history of Fried’s tooth and nail syndrome helps explain why diagnosis may still begin with a careful look at the early symptoms of Fried’s tooth and nail syndrome, followed by dental assessment, nail findings, and, when appropriate, genetic testing.