Intellectual disability, buenos-aires type is a very rare genetic condition that affects brain development and learning. Early signs of Intellectual disability, buenos-aires type usually begin in infancy or childhood and can include delayed speech, delayed motor skills, and ongoing problems with thinking and daily tasks. Not everyone will have the same experience. For many, this is a lifelong condition, and care focuses on special education, speech therapy, physical or occupational therapy, and support for day-to-day needs. Because Intellectual disability, buenos-aires type is so rare, the outlook can vary, but treatment is mainly supportive rather than curative.
How many people live with Intellectual disability, buenos-aires type?
Global and U.S. prevalence estimates for intellectual disability, Buenos-Aires type are not consistently reported by a single authoritative source. It appears to be exceptionally rare, with only a very small number of affected families described in the medical literature, so no reliable worldwide or U.S. count can be given.
Overview
Intellectual disability, buenos-aires typeSymptoms
Intellectual disability, Buenos-Aires type usually involves mild to moderate intellectual disability, delayed speech and learning, and behavior differences. Some children also have low muscle tone or delayed motor milestones.
Outlook and prognosis
People with Intellectual disability, Buenos Aires type often have lifelong learning and developmental support needs, but day-to-day abilities can vary. With early therapies, special education, and steady family support, many can keep building communication, self-care, and social skills over time.
Causes and risk factors
Intellectual disability, Buenos Aires type is caused by a genetic change, often new in the child rather than inherited. Family history can raise the chance, while supportive care affects day-to-day outcomes, not the underlying cause.
Genetic influences
Genetics are central to Intellectual disability, buenos-aires type. It is caused by a gene change, so genetic testing can help confirm the diagnosis, explain why it happened, and clarify recurrence risk for future children.
Diagnosis
Diagnosis of Intellectual disability, Buenos Aires type usually starts with clinical features and developmental history. Doctors often confirm the genetic diagnosis of Intellectual disability, Buenos Aires type with genetic tests, and sometimes brain imaging or other tests help rule out similar conditions.
Treatment and drugs
Treatment for Intellectual disability, Buenos Aires type centers on early developmental support. Speech, occupational, physical, and learning therapies can help daily skills and communication. Medicines may be used for related problems such as seizures, attention difficulties, sleep issues, or anxiety.
Symptoms
Learning new skills often takes more time and support with Intellectual disability, Buenos-Aires type. For many people with Intellectual disability, Buenos-Aires type, the early features are delayed milestones and slower speech development. Because this is a very rare genetic condition, doctors know its pattern from a small number of reported families. Learning, language, movement, and sometimes growth or appearance can be affected, but the mix varies from one person to another.
Children with this condition usually learn everyday skills and school-based tasks more slowly than expected. The degree of intellectual disability can vary, so support needs may be milder for some and much greater for others.
First words may come late, and speaking clearly or using longer sentences can remain hard. Some people understand more than they can say, which can be frustrating in daily conversations.
Babies and children may be slower to roll, sit, crawl, or walk, sometimes because their muscles feel less firm than usual. Day to day, this can mean playground activities, stairs, or longer walks take more effort.
Some people have attention, activity level, or social-communication differences that can affect learning and routines. These features are not present in everyone, and their severity can vary.
How people usually first notice Intellectual disability, buenos-aires type?
The first signs of Intellectual disability, Buenos-Aires type are usually noticed in infancy or early childhood, when a child is slower to reach milestones such as sitting, walking, speaking, or learning in the expected way. Many families first become concerned because language and overall development seem delayed, and doctors may also notice differences in muscle tone or other physical features, although this can vary from child to child. How Intellectual disability, Buenos-Aires type is first noticed often leads to a developmental evaluation and, if the pattern suggests a genetic cause, genetic testing to help confirm the diagnosis.
Types of Intellectual disability, buenos-aires type
No distinct types of Intellectual disability, Buenos-Aires type are widely recognized.
Can I slow down the onset of symptoms?
No, there is no good evidence that lifestyle changes or medicines can meaningfully delay the start of symptoms in intellectual disability, Buenos-Aires type, because this is a very rare genetic condition that affects brain development early and signs usually appear in infancy or early childhood. Early developmental follow-up and support, including speech, learning, and movement therapies, are the main medical steps because they may improve skills and day-to-day function, but they do not prevent the condition or stop it from appearing. While research is still ongoing, early recognition and steady support can still make a meaningful difference in daily life.
What genetics can tell you about symptoms
Because intellectual disability, Buenos Aires type is a very rare genetic condition, genetic testing can help confirm the diagnosis, but it usually cannot tell exactly which symptoms someone will have day to day. The gene change linked to this condition appears to affect brain development, so learning and developmental differences are central features, yet the severity can vary even among people with the same change. At this point, genetics may offer some broad clues, but it does not reliably predict the full symptom pattern or exactly when concerns will first become noticeable.
Causes and risk factors
The genetic causes of Intellectual disability, Buenos-Aires type usually involve a harmful gene change present from birth. In reported families, this condition appears to follow an X-linked inheritance pattern. Family history is the main known risk factor, and a new mutation can also happen in a child with no family history. Pregnancy exposures, diet, or parenting are not known to be the primary cause, but other health factors can influence how strongly the condition affects daily life. Researchers are still learning how these pieces fit together, and genetic counseling can help families understand the chance of it happening again.
What are the most common causes or risk factors?
Intellectual disability, Buenos-Aires type is a very rare inherited condition, and the main known cause is a gene change that affects early brain development. The clearest risk factor is a family history of the condition or of the same gene change, and the chance can be higher when the biological parents are related, such as cousins, because they are more likely to carry the same rare change. No common lifestyle, diet, or everyday environmental risk factors have been clearly linked to this condition.
Environmental and biological risk factors
Intellectual disability, Buenos-Aires type is extremely rare, so published information about non-genetic risk factors is limited. If you are looking for risk factors for Intellectual disability, Buenos-Aires type, current evidence does not show a clear pattern of environmental exposures or non-genetic biological factors that raise the chance of it occurring. Researchers are still exploring how outside influences interact with our inner biology.
No specific exposure during pregnancy or early development has been proven to cause Intellectual disability, Buenos-Aires type. This mostly reflects how rare the condition is and how little research is available.
Advanced maternal or paternal age has not been established as a risk factor for Intellectual disability, Buenos-Aires type. At this time, doctors do not have enough evidence to link the condition to a consistent age-related pattern.
Problems such as severe oxygen loss around birth or extreme prematurity can affect brain development in general. However, they have not been shown to specifically increase the likelihood of the Buenos-Aires type condition.
Genetic risk factors
When learning and developmental delays affect everyday milestones, families often want to understand why. Intellectual disability, Buenos Aires type is considered a genetic condition, meaning the main cause is a change in genetic material present from the start of life. Because it is very rare, doctors may consider more than one inheritance pattern until genetic testing gives a clearer answer. If you're unsure about your risks, a doctor can provide clarity.
Genetic change: Available reports suggest Intellectual disability, Buenos Aires type starts with a harmful genetic change that affects early brain development. The change is present from conception and can influence learning, speech, and other developmental skills.
Family history: A family history of similar developmental differences can increase suspicion for the same condition. When more than one relative is affected, doctors look more closely at how the genetic change may be passed through the family.
Inheritance pattern: In families where the genetic cause is identified, the repeat risk depends on the inheritance pattern. The condition may be passed down in some families, while in others it may appear in only one child.
New variant: Some children develop a rare condition because the genetic change is new and is not found in either parent on standard testing. When this happens, the chance of it happening again is often lower, though it is not always zero.
Parental mosaicism: Rarely, a parent can carry the genetic change in some egg or sperm cells even if their own blood test is normal. This can leave a small chance of recurrence in a future pregnancy.
Genetic testing: Genetic testing can help confirm the genetic causes of Intellectual disability, Buenos Aires type and clarify whether it can be inherited. This information can guide recurrence estimates for parents and sometimes testing for relatives.
Lifestyle risk factors
For people living with Intellectual disability, Buenos-Aires type, daily habits do not cause the condition, but they can influence functioning, symptom burden, and long-term health. When people ask about lifestyle risk factors for Intellectual disability, Buenos-Aires type, the most useful focus is how lifestyle affects Intellectual disability, Buenos-Aires type in everyday life. Supportive routines can help protect physical health, communication, behavior, sleep, and independence, while unhealthy patterns may make these areas harder to manage.
Low activity can worsen muscle weakness, poor coordination, weight gain, and low stamina, which may further limit mobility and daily participation. Regular movement that matches the person’s abilities can support balance, strength, fitness, and confidence in routine tasks.
Diets high in ultra-processed foods and low in protein, fiber, vitamins, and minerals can increase constipation, excess weight, and low energy. Consistent, balanced meals and attention to chewing or swallowing difficulties can make eating safer and help maintain growth and overall health.
Irregular sleep, too little sleep, or untreated sleep problems can worsen attention, irritability, daytime fatigue, and behavior. A predictable bedtime routine and assessment of snoring or restless sleep may improve daytime functioning and family stress.
Excessive screen use can displace exercise, sleep, communication practice, and hands-on learning that are important for development and adaptive skills. Structured screen limits and more interactive activities may support attention, social engagement, and learning.
Risk prevention
For intellectual disability, Buenos Aires type, true prevention of the condition itself is usually not possible because it is a genetic condition present from early development. In most cases, prevention focuses on lowering the chance of complications, spotting associated problems early, and supporting the best possible development and day-to-day function. If this condition runs in a family, genetic counseling can help clarify recurrence risk and discuss testing options before or during pregnancy. Different people need different prevention strategies—there’s no single formula.
If there is a family history of intellectual disability, Buenos Aires type, meeting with a genetics specialist before pregnancy may help estimate the chance of having an affected child. This can also help families understand carrier testing, reproductive options, and what current tests can and cannot show.
Good prenatal care can lower other risks that may worsen brain development, even though it usually cannot prevent this specific genetic condition. Avoiding alcohol, smoking, and harmful drugs, and managing infections and chronic illnesses during pregnancy, supports healthier fetal development.
Early developmental follow-up can help children with intellectual disability, Buenos Aires type build communication, movement, and learning skills as fully as possible. If you are wondering about early symptoms of intellectual disability, Buenos Aires type, delays in speech, learning, or everyday skills should be discussed with a doctor promptly.
Regular check-ups can catch treatable issues such as hearing problems, vision problems, sleep difficulties, or poor growth that can make learning and behavior harder. Prevention works best when combined with regular check-ups.
Can you prevent Intellectual disability, buenos-aires type?
No, there is no known way to prevent Intellectual disability, Buenos-Aires type, because it is a rare genetic condition that is usually present from the start of life. If this condition has affected your family, meeting with a genetics specialist before pregnancy may help you understand the chance of it happening again, but it cannot guarantee prevention.
Transmission
Intellectual disability, Buenos-Aires type is not an infection, so it cannot be caught from another person through touch, the air, food, sex, or blood. It is a genetic condition, which means it is linked to a change in a gene and is present from conception.
How Intellectual disability, Buenos-Aires type is inherited can vary by family, but the gene change may be passed from a parent to a child, and in some cases it may happen for the first time because of a new genetic change. If this condition has been diagnosed in your family, genetic counseling can help explain the chance of it happening again in another pregnancy.
When to test your genes
For intellectual disability, Buenos Aires type, genetic testing is usually considered when a child has unexplained developmental delay or intellectual disability, especially with a similar family history. Testing helps confirm the diagnosis, guide supportive care, and clarify recurrence risk for relatives, rather than serving as a routine early-detection test in healthy people.
Diagnosis
Many living with intellectual disability, Buenos Aires type come to medical attention because learning, speech, or day-to-day problem-solving are more difficult than expected for age. Doctors usually begin with a careful developmental and medical review, then look for patterns on exam that may point to a rare genetic condition. Getting a diagnosis is often a turning point toward answers and support. The genetic diagnosis of intellectual disability, Buenos Aires type is usually based on clinical findings and confirmed with genetic testing.
Doctors ask about early milestones such as sitting, walking, speech, and learning progress over time. This helps show whether the pattern fits a lifelong neurodevelopmental condition rather than a problem that started later.
Standard learning and thinking assessments measure areas such as reasoning, language, memory, and adaptive skills. These results help confirm intellectual disability and show how much support may be needed in daily life.
A clinician looks for growth patterns, neurologic findings, and any physical features that may occur along with intellectual disability, Buenos Aires type. In rare genetic conditions, this full exam can provide clues that guide the next tests.
A detailed family and health history can help show whether similar developmental differences have appeared in relatives. This can raise or lower suspicion for an inherited cause, even when no one else in the family has the same diagnosis.
How is Intellectual disability, buenos-aires type diagnosed?
Doctors usually diagnose intellectual disability, Buenos Aires type by looking at a child’s development over time, especially delays with learning, speech, and everyday skills, along with a careful medical exam. They often use developmental and learning assessments, and may also do tests such as hearing or vision checks to rule out other causes of these problems. Because this condition is genetic, a DNA test can help confirm the diagnosis.
Stages of Intellectual disability, buenos-aires type
Intellectual disability, Buenos Aires type does not have defined progression stages. This is because it is a developmental condition rather than an illness that steadily moves from an early phase to a late phase over time. Doctors usually diagnose it by looking at learning, language, and day-to-day developmental differences, often along with a physical exam and a careful review of early childhood history. If this condition is suspected, genetic testing may be offered to help confirm the cause, especially when the early symptoms of Intellectual disability, Buenos Aires type have been present since infancy or early childhood.
Outlook and prognosis
The outlook for intellectual disability, Buenos-Aires type is generally dominated by lifelong developmental and cognitive impairment, with severity varying from person to person. Available reports suggest that the condition is usually non-degenerative, meaning skills may improve with early developmental, educational, speech, and behavioral support rather than showing a steady neurologic decline. Many affected individuals are expected to need ongoing assistance in school and, later, with some aspects of independent adult living, although the degree of support can differ widely. Prognosis is influenced by associated features such as speech delay, behavioral difficulties, seizures, or other medical problems if present. Because this is a very rare disorder, detailed long-term natural history data are limited, but there is no clear evidence that the condition itself causes a markedly shortened life expectancy in the absence of serious associated complications. Mortality data specific to this syndrome have not been well established.
Long-term effects
Many living with Intellectual disability, Buenos Aires type need ongoing support with learning, communication, and day-to-day independence, and these needs often continue into adult life. The long-term picture is often shaped by how strongly a person is affected, since abilities can vary from one individual to another. In childhood, the main challenges are often around development and schooling, while in adulthood they more often affect work, relationships, and independent living.
Intellectual disability, Buenos Aires type usually causes lasting difficulties with reasoning, learning new skills, and keeping up with age-based school demands. These challenges often continue over time and can affect reading, writing, money skills, and problem-solving in adult life.
Many people with Intellectual disability, Buenos Aires type have long-term language or speech difficulties that can make conversations slower or less precise. Some understand more than they can express, while others need extra time or support to follow complex instructions.
For many, this can mean needing help with routines such as planning the day, managing appointments, handling money, or traveling alone. Long-term effects vary widely, and some people live quite independently while others need regular supervision.
In childhood, developmental delays can affect classroom progress and the early symptoms of Intellectual disability, Buenos Aires type often become clearer when learning demands increase. In adult life, the same pattern can limit job options and make structured support important for work tasks.
How is it to live with Intellectual disability, buenos-aires type?
Living with intellectual disability, Buenos-Aires type usually means needing extra support with learning, communication, and everyday tasks, although the level of help can vary from one person to another. For many living with this condition, school, work, and social situations may move at a different pace, and steady routines, clear explanations, and support from family, teachers, and therapists can make daily life much easier and more predictable. It also affects the people around them: parents, siblings, caregivers, and classmates may take on more practical and emotional support, but with the right services and understanding, many families build strong routines that help the person participate more fully and safely in daily life.
Treatment and drugs
Treatment for Intellectual disability, Buenos Aires type focuses on helping each person learn, communicate, and manage daily life as fully as possible, because there is no single medicine that reverses the underlying brain development differences. Care usually includes early and ongoing support such as special education, speech and language therapy, occupational therapy, physical therapy if needed, and regular follow-up to check learning, behavior, sleep, and any related medical problems. Supportive care can make a real difference in how you feel day to day, and many living with Intellectual disability, Buenos Aires type benefit most when care is tailored to their strengths, challenges, and age. If problems such as seizures, anxiety, attention difficulties, or behavior changes are present, doctors may treat those symptoms with standard medicines and behavioral support. For families asking about treatment for Intellectual disability, Buenos Aires type, the best plan is usually coordinated by a team that may include a pediatrician, neurologist, developmental specialist, therapists, school staff, and family caregivers.
Can you cure Intellectual disability, buenos-aires type?
No, there is no cure for intellectual disability, Buenos Aires type at this time. Treatment cannot reverse the condition, but early support, special education, speech and physical therapy, and care for any related medical or behavior problems can help improve learning, communication, and daily life. Care is usually tailored to each person, because the challenges can vary from one family to another.
Non-drug treatment
Daily support for Intellectual disability, Buenos Aires type usually centers on building communication, learning, movement, and independence rather than on a single treatment. Because this is a rare genetic condition, care is usually tailored to the child or adult’s strengths, delays, and any related developmental needs. Managing this condition often means combining therapies at home, in school, and in clinic so skills can grow in everyday life. Non-drug treatments often lay the foundation for long-term progress, especially when started early and adjusted over time.
Early developmental support can help with learning, play, communication, and daily routines during the years when the brain is growing quickly. For many families, this may start with home-based coaching or community programs soon after delays are noticed.
Speech and language therapy can support talking, understanding words, and nonverbal communication. If speech is limited, therapists may use picture boards, sign-supported communication, or communication devices to help people with Intellectual disability, Buenos Aires type express needs and choices.
Occupational therapy helps with dressing, feeding, handwriting, play, and other daily tasks. It can also work on fine motor control and sensory challenges that may make busy classrooms, grooming, or mealtimes harder.
Physical therapy can improve balance, strength, posture, and coordination when gross motor skills are delayed. This may help with walking, stairs, playground activities, and reducing fatigue during the day.
Your genes may have an impact on how drugs work for you
There is no medicine that treats intellectual disability, Buenos Aires type itself, but many living with it may use medicines for related problems such as seizures, behavior, attention, anxiety, or sleep. Small inherited differences in the body can change how fast a medicine is broken down or how strongly it works, so one person may do well on a usual dose while another may have more side effects, seem unusually sleepy, or need a different dose. Because of this, doctors often start low, watch closely, and adjust treatment based on how the person responds.
Pharmacological treatments
There is no medicine that reverses Intellectual disability, Buenos-Aires type itself. Treatment is usually tailored to problems that can come with the condition, such as seizures, attention difficulties, sleep problems, anxiety, or severe behavior symptoms. For many families, this means medicines are used to improve comfort, safety, and day-to-day functioning rather than to change the underlying genetic cause. Not everyone responds to the same medication in the same way.
There is no approved medicine that directly treats the genetic cause of Intellectual disability, Buenos-Aires type. Doctors usually focus on symptoms that are getting in the way of daily life, learning, sleep, or safety.
If seizures are part of Intellectual disability, Buenos-Aires type, antiseizure drugs such as levetiracetam, valproate, lamotrigine, or clobazam may be used. The choice depends on the seizure type, age, side effects, and how often episodes happen.
If hyperactivity, impulsivity, or poor focus are major concerns, medicines such as methylphenidate, amphetamine salts, atomoxetine, guanfacine, or clonidine may help. This can matter when early symptoms of Intellectual disability, Buenos-Aires type include marked attention and behavior difficulties that affect school or home routines.
When aggression, severe irritability, or self-injury is causing harm, doctors may sometimes use risperidone or aripiprazole. Drug treatments are not about fixing everything at once, but they can reduce intense behaviors enough for therapy and daily routines to work better.
Genetic influences
Intellectual disability, Buenos-Aires type is one of the rare forms of intellectual disability in which genetics are the main reason it occurs. A change in a gene can sometimes affect health, and this subtype is inherited in an autosomal recessive pattern. That means a child is affected only if they inherit one changed copy from each parent, while parents with a single changed copy are usually healthy themselves. For many families, this helps explain why Intellectual disability, Buenos-Aires type may seem to appear unexpectedly even when no one else is known to have it. Genetic counseling and, when appropriate, testing of relatives can help clarify the chance of it happening again in future pregnancies.
Is Intellectual disability, buenos-aires type genetic?
Genetics are central to Intellectual disability, buenos-aires type. It is caused by a gene change, so genetic testing can help confirm the diagnosis, explain why it happened, and clarify recurrence risk for future children.
Having a genetic risk is not necessarily a diagnosis
Gene variants are a normal part of being human and are widely found in the general population. Most of these variants do not directly affect health and simply reflect natural human variation. For many genes, having a variant connected 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, one well-understood variant in a particular gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For many living with Intellectual disability, Buenos-Aires type, treatment is guided more by the confirmed genetic diagnosis than by a single standard drug plan. At this time, there is no medicine known to reverse the underlying genetic change, so care usually centers on speech, physical, developmental, and learning support, with medicines added only for symptoms that may occur alongside the condition. Genetics is only one factor, so response to medicines for issues such as seizures, sleep problems, attention, or behavior can still vary from one child or adult to another. If medications cause unexpected side effects or do not seem to help, doctors may adjust the dose, review other medicines, and sometimes consider pharmacogenetic testing, although this is not routine for everyone with this condition. In practice, genetic testing for Intellectual disability, Buenos-Aires type is most useful for confirming the diagnosis, guiding follow-up, and helping families understand why treatment often needs to be individualized.
Interactions with other conditions
For many living with Intellectual disability, Buenos-Aires type, the bigger day-to-day challenge is often not a direct interaction with another disease, but how any added condition can make learning, communication, and independence harder. Because this is a very rare genetic condition, specific disease-to-disease interactions have not been clearly defined in the medical literature. Even so, some people may also have other neurodevelopmental or behavioral conditions, and having more than one diagnosis can make symptoms feel harder to untangle. In practice, this can matter when doctors are assessing changes in behavior, sleep, attention, or development, since a new medical problem may be missed if it is assumed to be part of the underlying condition. Open communication with healthcare providers helps when more than one specialist is involved, especially if there are concerns about seizures, mental health, or side effects from medicines.
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 Intellectual disability, buenos-aires type?
Because the main signs are delays in learning, speech, and overall development, doctors may also consider autism spectrum disorder, fragile X syndrome, Down syndrome, and other rare genetic causes of intellectual disability. Hearing loss, major speech and language disorders, and brain injury before or around birth can also look similar at first, especially in young children.
History
The history of intellectual disability, Buenos Aires type begins with careful clinical observation rather than a lab test. This very rare condition takes its name from Buenos Aires, where doctors first recognized a shared pattern in several family members who had learning and developmental difficulties along with other consistent features. At the time, the main clue was that the same set of problems appeared repeatedly within one family line, suggesting a single underlying disorder rather than unrelated learning issues.
It was first described in the medical literature after clinicians brought these family cases together and showed that they seemed to fit one recognizable syndrome. Early reports focused on what people and families were living with day to day, such as delayed development, lasting problems with learning, and other physical findings that helped doctors tell it apart from more common causes of intellectual disability. For many, this can mean the condition was recognized from patterns in real lives long before modern genetic testing could confirm what was happening biologically.
As medical science improved, rare conditions like intellectual disability, Buenos Aires type were reviewed more carefully and compared with similar syndromes. That process helped refine the description, although the condition has remained uncommon and is still not widely familiar outside specialist genetics and developmental clinics. Because only a small number of families have been reported, the medical history is more limited than it is for better-known conditions.
Later research supported the idea that intellectual disability, Buenos Aires type has a genetic basis, but the historical importance of the early case reports remains the same. They gave doctors a clearer way to recognize the condition, counsel families, and separate it from other disorders that can also cause developmental delay. Knowing this history also helps explain why diagnosis may still depend on seeing the overall pattern of features, especially in people being evaluated for rare causes of intellectual disability.