Williams Syndrome: Genetics, Diagnosis And Lifelong Care

Genetics and lifelong care

Williams syndrome is a genetic condition that can affect development, learning, the heart and blood vessels, and several other body systems. Its effects vary considerably. Understanding the diagnosis helps families and adults arrange appropriate health checks, recognize concerns, and build support around the individual.

Also called Williams–Beuren syndrome, it is caused by a small missing section of chromosome 7. A person does not need every commonly described feature to have the condition. Genetic testing establishes the diagnosis; appearance, personality, a learning difficulty, or a heart finding alone cannot do so. This guide explains the main issues and the questions worth discussing with a qualified care team.^{1, 2}

What causes Williams syndrome

Chromosomes carry DNA, including genes that provide instructions used throughout the body. In Williams syndrome, a deletion removes a group of neighboring genes from one copy of chromosome 7, at a location called 7q11.23. The usual deletion is approximately 1.5 to 1.8 million DNA building blocks long. People still have their other copy of this chromosome region; having only one copy of several genes in the region contributes to the condition’s features.¹

For background on the vocabulary, Sly Academy’s nucleic acids study guide explains DNA and RNA. It is a general biology resource, not a tool for interpreting a genetic test or making a diagnosis.

The condition therefore involves more than one gene and more than one organ. Describing it simply as an elastin disorder leaves out important aspects of development and health. Researchers continue to investigate how the deleted genes, other genetic differences, and biological development contribute to variation between individuals.^{2, 3}

Why the ELN gene matters

ELN provides instructions for elastin, a protein that helps tissues stretch and recoil. Losing one copy contributes strongly to the blood-vessel and connective-tissue changes associated with Williams syndrome. However, an alteration affecting ELN alone can cause an inherited form of supravalvular aortic stenosis without the broader Williams syndrome diagnosis. An ELN result must therefore be interpreted in the context of the exact genetic finding and the person’s clinical assessment.⁴

Genes are not a complete description of a person. A laboratory report cannot predict someone’s interests, preferred relationships, future occupation, or every support they will need. For families reading unfamiliar genetic terminology, it helps to separate three questions: what was found, what health issues it makes important to check, and what remains uncertain.

Inheritance and recurrence risk

Most people with Williams syndrome have a new, or de novo, deletion rather than inheriting it from a parent with the condition. It usually arises during the formation of an egg or sperm. It is not caused by parenting, and parents should not interpret the diagnosis as evidence that an ordinary action during pregnancy caused it.²

A person who has the Williams syndrome deletion has a 50% chance of passing it on in each pregnancy. This figure describes transmission from an affected parent; it does not mean that the unaffected parents of a child with Williams syndrome have a 50% chance in another pregnancy. When parents are unaffected, recurrence is generally low but is not assumed to be zero. A genetics professional can discuss the family’s circumstances, whether additional assessment is useful, and reproductive testing options.^{1, 5}

Risk discussions should be private, understandable, and non-directive. Adults with Williams syndrome deserve accessible explanations and meaningful participation in reproductive decisions. A probability describes a possible genetic outcome; it cannot forecast the exact abilities or medical needs of a future child. Ask for an explanation in everyday language if percentages or laboratory terms are confusing.

How Williams syndrome is diagnosed

A clinician may consider Williams syndrome after noticing a combination of developmental differences, feeding or growth concerns, a particular cardiovascular finding, or other features. Some people are identified through testing for unexplained developmental delay. A physical examination can guide the investigation, but comparing a face with online photographs is neither a reliable nor respectful diagnostic method.^{3, 6}

Chromosomal microarray testing can identify a deletion in the relevant region and describe its extent. Targeted methods, including fluorescence in situ hybridization, commonly abbreviated FISH, may be appropriate in particular settings. The clinical genetics team selects a test suited to the question and interprets whether the result establishes Williams syndrome or needs further investigation. The different methods do not all provide the same information.^{1, 6, 7}

Before testing, ask what the test can detect, what a negative or uncertain result would mean, and how the result will be explained. A negative result on one type of test is not automatically a complete explanation for ongoing developmental or medical concerns. Those concerns still deserve assessment. Keep a copy of the final laboratory report so future clinicians can review the actual finding rather than relying only on a diagnostic label.

Making the first appointments useful

A new diagnosis can bring a long list of referrals. Ask the coordinating clinician which appointments are most time-sensitive and who will organize them. Bring previous heart investigations, growth records, hearing assessments, and developmental reports when available. These documents can prevent duplicated work and help specialists distinguish a longstanding finding from a new change.

There is no need to understand every possible complication at once. Start with the person’s current needs, the initial assessments, and the next steps. Useful questions include: Which findings are confirmed? Which are only possibilities? Who will explain pending results? What symptoms should prompt an earlier appointment? Who should be contacted before a procedure involving sedation?

When a child is waiting for a diagnostic assessment, support for an observed communication, feeding, or mobility difficulty can be discussed on its own merits. Families can ask what help is available while testing proceeds. For an adult diagnosed later, the same principle applies: identify present priorities without assuming that childhood services or past medical records will already cover them.

Understanding the laboratory report

A report may use words such as deletion, copy number, chromosome coordinates, or pathogenic. Ask the genetics professional to explain the conclusion first, then the technical details that matter for care. If the deletion is described as atypical, ask which aspects of standard Williams syndrome information apply and which require a different interpretation. Do not infer severity from the number of characters in the report or compare chromosome coordinates across websites without professional help.

Clarify whether a relative needs an assessment and why, rather than assuming that everyone in the family needs the same test. If a report is later reinterpreted or additional testing is recommended, ask what new question the investigation is intended to answer. Keep the updated interpretation with the original result.

Heart and blood-vessel health

Cardiovascular assessment is a central part of care. A characteristic finding is supravalvular aortic stenosis, a narrowing of the aorta above the aortic valve. Narrowing can also involve pulmonary arteries and other vessels. High blood pressure, coronary artery involvement, and heart-rhythm abnormalities may require attention. The combination and severity differ between people, so one person’s experience cannot establish another person’s risk.⁸

Cardiology assessment is recommended at diagnosis, including a clinical examination, blood-pressure measurements, an electrocardiogram, and an echocardiogram. Additional investigations depend on the findings. Results guide follow-up and treatment decisions. A 2024 expert consensus emphasizes continuing cardiovascular assessment into adulthood and adapting care to the person. It also makes clear that parts of the evidence base remain limited.⁸

Families can make reports more useful by asking the cardiologist to explain which vessels are affected, whether findings have changed, and what the next review is intended to assess. Clarify who receives the report and what should happen if an appointment is missed. A written explanation is especially helpful when the person sees clinicians in more than one hospital or service.

Activity questions also belong in an individual conversation. Ask about the person’s preferred sport, recreation, or work tasks rather than seeking a blanket rule based only on the syndrome name. A general article cannot determine exercise clearance. The aim is an understandable plan that accounts for the actual heart findings and supports participation where appropriate.

Sedation and anesthesia need advance planning

Williams syndrome is associated with increased risk of serious cardiovascular complications around sedation and anesthesia. This matters for procedures outside heart surgery, including dental work and some scans. Risk depends on the person’s cardiovascular and other findings; a previously uncomplicated anesthetic does not replace assessment for a new procedure.^{8, 9}

Tell the procedural team about the diagnosis when the procedure is first discussed. Ask how the cardiologist, anesthesiologist, and clinician performing the procedure will coordinate. Appropriate assessment, the location of care, monitoring, and the recovery plan should be decided by professionals familiar with the relevant risks. This warning is a reason for careful planning, not a reason to abandon necessary care.^{8, 9}

For families, the practical task is information transfer. Check that the team has recent relevant cardiac reports, a current medicine list, allergies, and details of any earlier procedural problems. Request written preparation instructions directly from that team. Do not improvise fasting, fluid, or medicine changes from online material; preparation may need to be individualized.

Calcium and other physical health needs

High calcium requires clinical interpretation

Some people develop hypercalcemia, meaning an elevated blood calcium level, or hypercalciuria, meaning increased calcium in urine. Clinically significant high calcium is especially relevant in early childhood, although later abnormalities can occur. Symptoms such as vomiting, constipation, irritability, or reduced intake are not specific enough to identify the cause without assessment. Clinicians interpret laboratory results using age-appropriate ranges and the overall situation.¹⁰

Calcium problems can interact with hydration and kidney health. A care team may arrange blood or urine testing and further assessment when indicated. A result above a laboratory reference range does not, by itself, tell a family how serious the problem is or what to change at home.¹⁰

Growth, thyroid function, and metabolism

Growth and endocrine concerns can change with age. They include short stature, thyroid dysfunction, differences in puberty timing, and later problems with glucose regulation. Bone health and body composition may also need attention. These issues are reasons for ongoing clinical review rather than assumptions that every person will develop the same condition.¹¹

A useful appointment discussion distinguishes a stable growth pattern from a recent change. Bring the concern in concrete terms, such as clothing fit, stamina, appetite, or an unexpected change in daily routines. Ask which findings need investigation and when results will be reviewed. Avoid treating a symptom as inevitable simply because it has been reported in Williams syndrome.

Feeding, digestion, kidneys, and movement

Feeding difficulties, reflux, constipation, and abdominal discomfort can affect daily life. A prospective study involving children and adults documented a substantial gastrointestinal burden, while also showing that problems differ between individuals. Persistent symptoms deserve a clinical explanation. Severe or worsening abdominal pain, repeated vomiting, or inability to maintain intake should prompt urgent medical assessment rather than an assumption of ordinary constipation.^{12, 21}

Kidney and urinary-tract differences, visual difficulties, dental problems, and changes in joint flexibility or muscle tone are also part of the wider clinical picture. The purpose of multidisciplinary care is to identify the concerns a particular person actually has and respond to them. A list of associated features should not become a checklist of expected future illness.^{2, 3}

When describing pain or a change in function, specific observations help: where it occurs, when it began, what the person says or communicates, and how it affects sleep, eating, movement, or participation. If communication is difficult, ask clinicians how best to record symptoms. A new behavior may be useful information, but it should not be treated as a diagnosis.

Practical access matters as much as having a referral. For an eye or dental appointment, explain any communication needs and ask how the examination will be made understandable. A familiar supporter, extra explanation, or a planned pause may help the person participate. If sedation is being considered to complete an examination or treatment, bring the discussion back to the specialist coordination described above.

Do not let the genetic diagnosis overshadow ordinary health care. Ask who is responsible for routine preventive care and for evaluating symptoms that may be unrelated to Williams syndrome. A coordinated approach should leave room for both syndrome-associated risks and the same broad health concerns that affect other people.

Development, learning, and communication

Developmental progress and learning needs are variable. Many people need support with intellectual, motor, or adaptive skills, but broad descriptions do not capture an individual’s abilities. A detailed assessment can identify both strengths and barriers. It is more useful than making educational decisions from the syndrome name or a single overall test score.¹³

Some people show relative strengths in vocabulary or verbal memory alongside difficulties with visuospatial construction, conceptual language, planning, or the social use of communication. A relative strength means a skill is stronger than other skills in the same person’s profile; it does not necessarily mean the skill is at an age-expected level. Fluent conversation can coexist with difficulties understanding instructions or abstract information.¹³

Turning assessment into practical support

Early intervention and appropriately selected physical, occupational, and speech-language therapies can address identified needs. Their roles differ: movement and mobility, participation in everyday tasks, and communication may need separate assessment and coordinated goals. Therapy should be tailored to the person rather than offered as a promise to normalize development. Ask what a proposed intervention is meant to help with and how benefit will be assessed.^{6, 14}

Ask an education or therapy team to connect each recommendation to a real activity. What makes a classroom task difficult: understanding the words, organizing materials, coordinating movement, remembering steps, or coping with noise? A clear description makes it easier to choose an accommodation and then judge whether it helped.

For example, a learner might benefit from shorter instructions, additional processing time, a less cluttered task, or a different way to show understanding. These are options to test with the individual, not a universal teaching prescription. Invite the learner to say what feels useful, frustrating, or tiring, using their preferred communication method.

Speech and language assessment should look beyond pronunciation. Comprehension, conversational exchange, asking for clarification, and using language across different situations can remain important even when speech sounds confident. Support goals can change as schoolwork and social expectations become more complex.¹⁴

Progress is worth documenting in meaningful terms: communicating a choice, completing part of a task with less assistance, joining a preferred activity, or asking for a break. Comparisons with another child who has Williams syndrome rarely answer whether a particular plan is working. Compare the person’s current access and participation with their own earlier experience.

Hearing and sound sensitivity

Sound sensitivity and hearing loss are different concerns, and both can occur. Distress around noise does not establish unusually good hearing. Research has documented hearing impairment in children and adults, including changes that may not be obvious in ordinary conversation. Audiological assessment can clarify what is happening and guide appropriate support.^{15, 16}

Tell the audiologist about situations that are difficult, such as crowded rooms, sudden sounds, or understanding speech in background noise. At school, work, or appointments, ask about reasonable adjustments and a way to request a quieter space. The person’s report of discomfort deserves attention without treating all sound-related reactions as the same problem.

Anxiety, attention, and emotional well-being

Anxiety, specific fears, and attention difficulties can affect people with Williams syndrome. An interest in social contact does not rule out significant distress. Research following anxiety over time supports taking persistent symptoms seriously, while small study samples limit predictions about any particular person’s course.¹⁷

Changes in sleep, participation, avoidance, or distress are worth discussing with clinicians. Assessment should consider the person’s own account, possible physical discomfort, communication barriers, and environmental demands. Mental health support should be accessible and adapted to understanding and communication needs. Treatment choices require an individual assessment, including relevant physical health considerations.

Do not describe someone as always happy, naturally trusting, or destined to have a particular talent. These stereotypes can make it harder to notice fear, anger, grief, or a wish for privacy. Ask what the person enjoys and how they want support. Their preferences may differ from descriptions encountered in articles or support groups.

A helpful conversation about anxiety asks what happens before distress, what the person is worried about, and what would make the situation feel more manageable. Record their explanation as accurately as possible rather than replacing it with someone else’s interpretation. If a setting is overwhelming, discuss adjustments with the relevant professional. Forced participation or dismissing a fear as unreasonable is unlikely to reveal what support is missing.

When several adults provide support, agree on how the person can communicate a need for help or a break. Consistent communication can make handovers clearer without requiring the person to repeat a difficult experience to every new member of staff.

Coordinating monitoring without a one-size-fits-all schedule

A primary clinician can help connect specialist care and routine preventive care. The 2020 American Academy of Pediatrics clinical report describes broad areas of assessment in children; newer cardiovascular consensus adds detail for heart care. These publications are starting points for a personalized plan, not substitutes for it. Age, established findings, new symptoms, and previous results influence what is needed.^{6, 8}

The table is a conversation aid, not a testing schedule. On a small screen, scroll sideways if needed.

Areas to include in a clinician-directed care plan
Area	What may be reviewed	Question to clarify
Heart and vessels	Blood pressure, cardiac findings, rhythm, procedure planning	Who sets the next review and pre-procedure assessment?
Calcium and kidneys	Relevant blood and urine results, urinary symptoms	Which changes should trigger earlier contact?
Growth and hormones	Growth, thyroid function, puberty, metabolic health	Which age-related checks apply now?
Hearing, vision, and teeth	Sensory access, dental needs, functional changes	Are assessments and accommodations current?
Development and well-being	Communication, learning, movement, anxiety, sleep	Do current supports match everyday needs?
Adult transition	Receiving clinicians, records, support with decisions	Who confirms that the handover happened?

Keep one concise care summary that records the diagnosis, important findings, allergies, current medicines, specialist contacts, and pending actions. It should distinguish an appointment that has been requested from one that is booked, and a test that has been ordered from a result that has been discussed. Ask the team to help verify medical details rather than relying on memory.

At the end of a visit, agree on a small set of next steps: who is responsible, what information is needed, and how the family or adult will hear back. If several recommendations seem inconsistent, request clarification between the clinicians. The person receiving care should not be left to reconcile competing instructions alone.

Reading treatment claims and new research

Current care addresses health problems and supports development; there is no established treatment that restores the missing chromosome segment throughout the body. Research into genetic mechanisms and possible therapies should not be confused with an available cure.³ A headline about cells, animals, or a small early study cannot establish that an intervention is effective or appropriate for a particular person.

Specific medical problems may require treatment in their own right. Significant arterial narrowing sometimes requires surgery; other concerns may require medicines or other specialist care. These decisions depend on the actual condition, severity, and risks, including interactions with existing health problems. The relevant clinician should explain the intended benefit, alternatives, and follow-up rather than treating the genetic diagnosis as a single treatment target.^{6, 8}

When evaluating a claim, ask what was actually studied, how many people participated, what outcome was measured, and what risks or uncertainties remain. Was the improvement meaningful in daily life, or did only a laboratory measurement change? Was there an appropriate comparison? These questions help distinguish a promising research direction from evidence ready to inform routine care.

Bring a specific article or product claim to a relevant clinician before making changes. Be cautious about guaranteed outcomes, testimonials presented as proof, or pressure to purchase quickly. Participation in research is a separate decision that deserves an accessible explanation of its purpose, requirements, potential burdens, and consent process. Declining research should not be framed as failing to pursue the person’s potential.

Adulthood, lifespan, and changing support

Williams syndrome is a lifelong condition. Many affected people live into adulthood, but there is no single life-expectancy figure that reliably predicts an individual’s future. Cardiovascular disease can have serious consequences, and health needs continue across the lifespan. Neither a promise of a normal lifespan nor a fixed shortened lifespan is an appropriate personal forecast.^{3, 8}

Research on older adults remains more limited than research on children. Small long-term studies describe variable cognitive changes and multiple physical health concerns. They do not justify assuming that every adult will decline at a certain age. New difficulties with memory, mobility, communication, or everyday skills deserve evaluation rather than being attributed automatically to the syndrome or to aging.¹⁸

Plan the handover to adult care

Transition works best as a planned process rather than a single final pediatric appointment. Discuss who will provide adult primary care and relevant specialist care, how records will be transferred, and whether the receiving service has accepted the referral. The young person’s communication preferences, goals, and desired involvement of supporters should travel with the medical information.¹⁹

A practical handover includes an understandable summary, current follow-up needs, and a named route for questions. It also needs follow-through: confirm that the first adult appointments occurred and that responsibility for outstanding tests is clear. Local systems differ, so ask about eligibility, practical access, and any services that may change when pediatric or school-based support ends.¹⁹

Participation, autonomy, and safety

Support needs vary across activities. Someone may need help with appointments while confidently expressing preferences about friends, leisure, or work. Ask which decisions they want help with and how that help should be offered. Address the person directly, allow time to respond, and check understanding without treating agreement or fluent speech as proof of comprehension.

Education about consent, boundaries, privacy, and online interactions should be accessible, age-appropriate, and respectful. Practice ways to refuse an unwanted request, seek help, or check uncertain information with a chosen trusted person. Support should create opportunities for relationships and participation while responding to actual needs, rather than relying on assumptions about sociability.

For employment or community activities, begin with the person’s interests and the demands of a specific setting. Consider transport, communication, physical accessibility, sensory needs, and who can help when something changes. A diagnosis alone cannot determine the right living arrangement, job, or level of independence. Plans should be revisited as experience and circumstances develop.

Families and supporters also benefit from clear information and sustainable arrangements. Disease-specific organizations may help people find peer connections and practical resources. GARD lists organizations and information resources, although a listing is not an endorsement and available services differ. Peer experience can complement professional care, but another person’s test results or treatment should not become an individual medical plan.²⁰

Frequently asked questions

1. Can Williams syndrome be diagnosed from facial features?

No. A clinician may recognize features that suggest a genetic assessment, but appearance alone cannot establish the diagnosis. Appropriate genetic testing and clinical interpretation are needed. If there are developmental or medical concerns, seek an assessment based on those concerns rather than comparing photographs or relying on a personality description.

2. Does every person have the same symptoms or abilities?

No. Medical findings, learning profiles, communication, interests, and daily support needs differ. A commonly reported feature is a possibility to consider, not a prediction about an individual. Assessments should guide support, and plans should change when needs change. A person’s strengths and preferences deserve as much attention as difficulties.

3. Is the chance of another affected child always 50%?

No. The 50% transmission chance applies to each pregnancy of a parent who has the Williams syndrome deletion. It is not the usual recurrence risk for unaffected parents whose child has a new deletion. A clinical genetics professional can explain the family’s situation, the remaining uncertainty, and available reproductive options.

4. Can someone with Williams syndrome have anesthesia?

Necessary procedures can be planned, but Williams syndrome carries additional risk around sedation and anesthesia. Tell the procedural team early and ask how appropriate specialists will coordinate assessment and care. A previous successful procedure does not eliminate the need for a new plan. Follow preparation instructions from the responsible clinical team.

5. Should calcium or vitamin D be restricted automatically?

No universal diet or supplement plan is appropriate. Calcium results, growth, kidney health, bone health, and the person’s intake all matter. Ask the clinician responsible for monitoring before changing supplements or restricting foods. Do not attempt to treat suspected high calcium without assessment, and seek timely care for concerning symptoms.

6. What should a family focus on after a new diagnosis?

Ask for a prioritized care plan, clarification of cardiovascular and procedural risks, and help arranging relevant assessments. Keep the genetic report and important medical records together. Discuss current developmental or daily-life needs, identify who coordinates care, and make space for questions over time. The diagnosis should help organize support around the person.

Sources

Sources were checked on October 6, 2026. Dates below are publication or update dates, not claims that an older report has been reaffirmed. Research findings describe groups and do not predict an individual’s course. Numbered notes in the article refer to this list.

GeneReviews: Williams Syndrome. Updated April 13, 2023. Recurrent 7q11.23 deletion, molecular diagnosis, inheritance, and genetic counseling.
MedlinePlus Genetics: Williams syndrome. Updated May 31, 2022. Multisystem overview, genetic cause, and usually de novo origin.
Kozel and colleagues: Williams syndrome. Nature Reviews Disease Primers, June 17, 2021. Multisystem variability, genetic mechanisms, clinical assessment, and lifespan context.
MedlinePlus Genetics: ELN gene. Updated March 8, 2022. Elastin function and distinction between ELN-related disorders and the wider deletion syndrome.
MedlinePlus Genetics: Understanding genetic recurrence risk. Accessed October 6, 2026. How dominant inheritance probabilities apply to individual pregnancies.
Morris, Braddock, and the AAP Council on Genetics: Health Care Supervision for Children With Williams Syndrome. Pediatrics, February 2020. Pediatric assessment and coordinated care; cited as the 2020 clinical report.
CDC: Genetic Testing. May 15, 2024. Test selection, chromosome testing, and interpretation with genetic counseling.
Collins and colleagues: Clinical Care for Cardiovascular Disease in Patients With Williams–Beuren Syndrome. Published September 18, 2024; Journal of the American Heart Association, October 2024. Expert consensus on cardiovascular assessment, procedural risk, and adult monitoring.
Matisoff and colleagues: Risk assessment and anesthetic management of patients with Williams syndrome. Published October 12, 2015. Periprocedural cardiovascular risk and specialist planning.
Sindhar and colleagues: Hypercalcemia in Patients with Williams-Beuren Syndrome. Journal of Pediatrics, November 2016. Multicenter study of calcium abnormalities, age-specific interpretation, and associated concerns.
Stanley and colleagues: Growth, body composition, and endocrine issues in Williams syndrome. February 2021. Growth, thyroid, glucose, and bone-health considerations.
Boechler and colleagues: Gastrointestinal manifestations in Williams syndrome. 2024. Prospective pediatric and adult cohort describing gastrointestinal symptoms.
Mervis and John: Cognitive and Behavioral Characteristics of Children with Williams Syndrome. May 15, 2010. Uneven learning profiles, relative strengths, and individualized assessment.
Mervis and Velleman: Children with Williams Syndrome: Language, Cognitive, and Behavioral Characteristics and their Implications for Intervention. 2011. Communication needs beyond speech clarity and implications for support.
Marler and colleagues: Auditory Function and Hearing Loss in Children and Adults with Williams Syndrome. May 15, 2010. Audiological findings supporting attention to hearing across ages.
Levitin and colleagues: Aversion, awareness, and attraction. 2005. Distinctions among sound sensitivity and other auditory experiences.
Ng-Cordell and colleagues: Anxiety in Williams Syndrome. Published online November 9, 2017; March 2018 journal issue. Persistence and variability of anxiety in a small longitudinal sample.
Sauna-aho and colleagues: Cognition in adults with Williams syndrome. April 29, 2019. Small 20-year follow-up illustrating variation and limits of adult evidence.
White, Cooley, and colleagues: Supporting the Health Care Transition From Adolescence to Adulthood in the Medical Home. November 2018; reaffirmed with reference and data updates July 2023. Planned, person-centered transfer and integration into adult care.
NIH Genetic and Rare Diseases Information Center. Accessed October 6, 2026. Rare-disease information, resource navigation, and connections with patient organizations.
MedlinePlus Medical Encyclopedia: Recognizing medical emergencies. Reviewed January 8, 2025. General emergency warning signs, including chest pain, breathing difficulty, and loss of consciousness.

Williams Syndrome: Genetics, Diagnosis and Lifelong Care