Anophthalmia plus syndrome is a rare genetic condition that affects eye development and other body systems. People with Anophthalmia plus syndrome are born with one or both eyes missing, and doctors may also see differences in the face, brain, heart, kidneys, or limbs. Signs are present from birth and the condition is lifelong, but the exact pattern can vary. Care focuses on supportive surgeries, vision aids, developmental therapies, and regular checkups to manage related features. The outlook depends on which organs are involved, and advances in care mean people often manage well with treatment.
Overview
Anophthalmia plus syndromeSymptoms
Anophthalmia plus syndrome features absent or small eyes, often noticed on prenatal scans or at birth. Other signs can include facial differences, developmental delays, or organ issues such as heart anomalies. Early signs of Anophthalmia plus syndrome vary widely.
Outlook and prognosis
Many living with Anophthalmia plus syndrome grow and learn with tailored support, but vision is typically absent and other body differences may need ongoing care. Early therapies, protective eye prostheses, and regular checkups improve comfort, development, and safety. Lifespan varies by associated features.
Causes and risk factors
Anophthalmia plus syndrome is caused by genetic variants, often new; in some families, the change is inherited. Risk is higher with family history or parents who are related. Prenatal factors—some infections, maternal diabetes, alcohol, isotretinoin, or vitamin A imbalance—may contribute.
Genetic influences
Genetics plays a central role in Anophthalmia plus syndrome. Most cases arise from rare variants in genes guiding early eye and organ development, often inherited in autosomal recessive or dominant patterns, with variable expressivity. Genetic testing informs diagnosis, prognosis, and family planning.
Diagnosis
Doctors diagnose Anophthalmia plus syndrome using clinical features at birth, detailed eye and physical exams, and imaging like ultrasound or MRI. Genetic tests can confirm the cause; genetic diagnosis of Anophthalmia plus syndrome guides care.
Treatment and drugs
Treatment for Anophthalmia plus syndrome is tailored to each person’s needs. Care often combines eye prosthetics and socket expansion, early developmental therapies, and surgeries for associated features, with genetics, ophthalmology, ENT, neurology, and endocrinology teams coordinating. Regular follow‑up supports vision alternatives, growth, breathing, and learning.
Symptoms
Anophthalmia plus syndrome affects the eyes and other parts of the body from birth. Early features of Anophthalmia plus syndrome can include one or both eyes absent or very small, along with feeding, growth, or developmental differences. Clinicians call this anophthalmia or microphthalmia, which means the eye is missing or much smaller than usual. The pattern and severity differ widely among children.
One or both eyes may be missing or much smaller than usual, leading to little or no vision. This hallmark feature of Anophthalmia plus syndrome is present at birth.
Vision can range from limited light awareness to complete blindness. Families often adapt lighting, layout, and toys to support safe movement and play.
Eyelids and the eye socket may look different, such as small openings or lids that don’t form fully. These changes can affect eye comfort, tear flow, and facial appearance.
Some newborns have trouble latching, swallowing, or keeping feeds down. In Anophthalmia plus syndrome, this can relate to differences in the food pipe or windpipe.
How people usually first notice Anophthalmia plus syndrome?
Parents and doctors usually first notice anophthalmia plus syndrome at birth or on a prenatal ultrasound, when one or both eyes are missing or very underdeveloped, and the eyelids or eye sockets look different from expected. Because this condition often comes with other early features, newborn exams may also pick up differences in facial shape, limb or hand formation, or issues like breathing or feeding difficulties that prompt urgent checks. When families search for the first signs of anophthalmia plus syndrome, they’re often describing those visible eye findings right away along with early developmental or structural differences that lead to genetic and specialist evaluations.
Types of Anophthalmia plus syndrome
Anophthalmia plus syndrome has a few recognized clinical variants that can look different from one another. These variants are typically defined by the gene involved and the pattern of features seen at birth, and they can range from severe to milder forms. Not everyone will experience every type. Understanding the main variants can help families and clinicians talk clearly about the types of Anophthalmia plus syndrome they may encounter.
SOX2-related type
This variant often causes absent eyes at birth along with differences in brain development and feeding or breathing challenges. Genital differences and learning difficulties are also common.
STRA6-related type
This type frequently includes eye absence or very small eyes together with heart defects and lung development differences. Some people also have intestinal malrotation and distinctive facial features.
OTX2-related type
People may have eye absence or very small eyes plus pituitary hormone deficiencies that can affect growth and blood sugar. Cleft palate and developmental delay are also seen.
BMP4-related type
This variant can include eye malformations with kidney and limb differences. Some have brain structure changes and growth restriction.
RAX-related type
Individuals often have severe eye underdevelopment or absence and may show brain malformations. Developmental delays can range from mild to significant.
VSX2-related type
This type commonly presents with small or absent eyes and retinal development problems. Some people have milder systemic involvement compared with other variants.
What genetics can tell you about symptoms
Some people with anophthalmia-plus syndrome have no eyes or very small eyes because changes in genes like SOX2, OTX2, or STRA6 disrupt early eye formation. The same variants can also affect brain, heart, or endocrine development, leading to developmental delays, feeding issues, seizures, or hormone problems.
Causes and risk factors
Anophthalmia plus syndrome often stems from changes in genes that guide early eye and body development. These gene changes may be inherited from a parent or can happen as a new change at conception. Some risks are modifiable (things you can change), others are non-modifiable (things you can’t). Risks during early pregnancy include certain infections, alcohol, some medicines or chemicals, and poorly controlled diabetes. Family history and a past affected pregnancy can raise the chance, so risk factors for Anophthalmia plus syndrome reflect both genetics and early pregnancy exposures.
Environmental and biological risk factors
Anophthalmia plus syndrome begins very early in pregnancy, when the eyes and other organs are forming. Doctors often group risks into internal (biological) and external (environmental). Below are environmental and biological risk factors for Anophthalmia plus syndrome that matter most when exposures happen in the first 6–8 weeks. Most pregnancies exposed to a single factor will still be healthy, but combined risks can add up.
Infections such as rubella, CMV, toxoplasmosis, or Zika in the first trimester can disrupt how the eyes and other organs form. Risk is highest if the infection happens in the first 6–8 weeks. These exposures can raise the chance of Anophthalmia plus syndrome.
High-dose vitamin A or prescription retinoid acne medicines taken early in pregnancy can interfere with eye and brain development. Exposure during weeks 3–8 carries the greatest risk. This pattern has been linked with features seen in Anophthalmia plus syndrome.
Low vitamin A around conception can disturb the signals that guide early eye formation. Deficiency during organ-building weeks raises the chance of missing or very small eyes.
Thalidomide use in early pregnancy has been associated with missing or very small eyes along with other birth differences. Even with strict safety controls today, this medicine can cause birth defects if taken during early pregnancy.
Genetic risk factors
Changes in several genes that guide early eye and body development can underlie this condition. In Anophthalmia plus syndrome, known genetic causes include alterations in SOX2, OTX2, STRA6, BCOR, CHD7, and related developmental genes, as well as small chromosomal deletions or duplications; these can be inherited or arise as new changes. Carrying a genetic change doesn’t guarantee the condition will appear. Understanding the genetic causes of Anophthalmia plus syndrome can help estimate family recurrence risk.
SOX2 variants: Changes in the SOX2 gene are a leading cause of anophthalmia with additional body-system differences. They are usually autosomal dominant and often arise as new changes, with wide variation in severity.
OTX2 variants: Changes in OTX2 can lead to missing or very small eyes along with brain or pituitary differences. Most are autosomal dominant and happen de novo, though they can be inherited.
STRA6 variants: Alterations in STRA6, a gene in the vitamin A pathway, can cause severe eye underdevelopment plus heart, lung, or diaphragm issues. This cause is autosomal recessive, meaning both parents usually carry one silent change.
BCOR variants: Changes in the BCOR gene can produce an X-linked form with eye underdevelopment plus skeletal, dental, or heart differences. Males are often more severely affected, while females may show milder features.
CHD7 variants: CHD7 changes, often linked with a broader birth-difference pattern, can sometimes include anophthalmia or very small eyes. These are usually autosomal dominant and frequently de novo.
PAX6 and others: Genes that guide early eye formation, such as PAX6, BMP4, FOXE3, and VSX2, have been tied to absent or very small eyes. Some families show isolated eye findings, while others have extra body-system features.
Chromosomal changes: Small missing or extra pieces of chromosomes that include eye-development genes (for example near SOX2 or OTX2) can lead to this syndrome. These changes can be inherited or occur for the first time.
De novo changes: Many affected children have a new genetic change not found in either parent. Recurrence risk is usually low but not zero due to the possibility of parental mosaicism. In mosaicism, a small portion of a parent’s cells carry the change.
Dominant inheritance: When a parent has the gene change, each pregnancy has a 50% chance of inheriting it. Features can differ widely even within the same family.
Recessive inheritance: This pattern requires two changes in the same gene, one from each parent who usually has no symptoms. The chance of an affected child is 25% in each pregnancy.
X-linked patterns: Changes on the X chromosome can affect males and females differently. Women may be carriers with mild features, while males can be more severely affected.
Lifestyle risk factors
Anophthalmia plus syndrome is not caused by lifestyle habits, but daily routines and care choices can shape symptoms, development, and complication risks. This overview focuses on how lifestyle affects Anophthalmia plus syndrome in practical ways. It highlights lifestyle risk factors for Anophthalmia plus syndrome that can make outcomes better or worse depending on how they’re managed.
Rich tactile, auditory, and movement play fosters cognitive and motor development. Delayed or limited stimulation can deepen developmental gaps.
Regular, supervised activity and orientation/mobility training improve balance, strength, and independence. Inactivity raises risks of constipation, weight gain, and deconditioning.
Consistent timing and strong light–dark cues help manage non-24-hour sleep-wake issues common in total blindness. Irregular sleep can worsen learning, behavior, and caregiver stress.
Adequate fiber, fluids, and balanced calories support growth and bowel regularity when activity is limited. Overfeeding or restrictive diets can worsen constipation, weight issues, and micronutrient gaps.
Risk prevention
Anophthalmia plus syndrome usually starts in early development, so there isn’t a way to fully prevent it. Prevention is about lowering risk, not eliminating it completely. Steps before and during pregnancy can reduce certain risks linked to eye and facial development and can help with early detection and planning. If a diagnosis is made, prompt care can prevent complications and support growth and comfort.
If you have a family history or a prior affected pregnancy, a genetics visit can clarify inheritance and your personal risk. Options like carrier testing, IVF with embryo testing, or using donor eggs/sperm may reduce the chance of passing on certain gene changes.
Detailed ultrasounds (often around 18–22 weeks) and, when needed, fetal MRI can look closely at eye and facial development. Diagnostic tests like chorionic villus sampling or amniocentesis can check genes when a concern is found, and prenatal screening for Anophthalmia plus syndrome helps plan care early.
Before pregnancy, staying up to date on vaccines such as rubella and varicella lowers infection risks that can affect eye development. During pregnancy, hand hygiene, avoiding undercooked meat and unpasteurized foods, and checking travel advisories (for viruses like Zika) add protection.
Review all prescriptions, supplements, and herbal products before conception. Avoid known pregnancy-harmful drugs such as isotretinoin and high-dose vitamin A unless your doctor confirms a safe plan and effective contraception.
Transmission
Anophthalmia plus syndrome is not contagious; it can’t be caught or spread between people. It is usually present from birth because of changes in genes that guide early eye and body development, and many cases happen as a new genetic change in the child with no family history. When Anophthalmia plus syndrome is inherited, the pattern varies by the gene involved: in some families a parent with the condition can pass it on in a dominant way (each child has a 50% chance), while in others two symptom‑free carrier parents can have a child affected in a recessive way (25% chance per pregnancy). If you’re wondering how Anophthalmia plus syndrome is inherited in your family, a genetics professional can review your history, discuss the genetic transmission of Anophthalmia plus syndrome, and offer testing to clarify risks for future pregnancies.
When to test your genes
Consider genetic testing if anophthalmia or microphthalmia is present, especially with other birth differences or developmental concerns, or if there’s a family history of similar eye findings. Testing helps confirm the diagnosis, guide surveillance for associated organ issues, and inform recurrence risks. Early results can tailor care plans and connect families to targeted supports.
Diagnosis
Diagnosis of Anophthalmia plus syndrome usually starts with what’s seen at birth—missing or very small eyes—and any feeding or genital differences. Doctors usually begin with a careful physical exam and eye evaluation, then use imaging to look at the eye sockets and brain. The genetic diagnosis of Anophthalmia plus syndrome is confirmed with testing of genes known to cause this pattern, most often SOX2. Putting these pieces together helps confirm the cause and guide care for the whole body.
Clinicians look for absent or very small eyes, feeding difficulties, and genital differences that often appear together. Family history is often a key part of the diagnostic conversation.
A pediatric eye specialist checks the lids, cornea, and eye size to document whether the eye is small or absent. This exam also looks for any surface structures that may affect comfort or future procedures.
Ultrasound of the orbits or MRI can show whether any internal eye structures are present. Imaging helps distinguish anophthalmia from severe microphthalmia and guides surgical planning.
MRI of the brain looks for midline changes and pituitary differences that can occur with this syndrome. These findings support the diagnosis and flag hormone issues that may need treatment.
Stages of Anophthalmia plus syndrome
Anophthalmia plus syndrome does not have defined progression stages. It is present from birth, and while needs can change as a child grows, there isn’t a predictable, step-by-step worsening. Early signs and symptoms of Anophthalmia plus syndrome are usually recognized at birth and then assessed with an eye exam, imaging such as ultrasound or MRI, and checks for other body differences. Different tests may be suggested to help confirm the diagnosis, look for related findings, and guide care over time.
Outlook and prognosis
Looking ahead can feel daunting, but most children with Anophthalmia plus syndrome can grow, learn, and form strong connections with the right support in place. The outlook varies widely because features can range from missing one or both eyes to differences in brain development, feeding, breathing, or heart structure. Some children have mostly eye differences and typical growth, while others need ongoing support for movement, learning, or seizures. Doctors call this the prognosis—a medical word for likely outcomes.
For many families, the early months focus on safe feeding, breathing, and preventing infections; early symptoms of Anophthalmia plus syndrome often guide which specialists get involved first. Survival into childhood is common when critical medical issues are identified and treated promptly, but serious brain or heart differences can increase the risk of complications, especially in the first year. If seizures occur, good control can improve comfort, sleep, and development. In medical terms, the long-term outlook is often shaped by both genetics and lifestyle.
Over time, most people with Anophthalmia plus syndrome benefit from vision rehabilitation, orientation and mobility training, and therapies that build communication and motor skills. Many children attend mainstream or specialized schools and use tactile or auditory tools to explore and learn. With ongoing care, many people maintain good overall health, though some will need lifelong support for daily activities. Talk with your doctor about what your personal outlook might look like.
Long-term effects
For many, day-to-day life with Anophthalmia plus syndrome centers on adapting to vision absence while also monitoring other body systems that may be affected. Long-term effects vary widely, and the outlook depends on which organs are involved and how severe those differences are. People often notice early symptoms of Anophthalmia plus syndrome at birth, but the longer-term picture usually becomes clearer over childhood and the teen years. Many grow into adulthood, especially when major heart, kidney, or brain differences are mild or well controlled.
Most people have no light perception because the eyes do not form. This results in lifelong blindness with reliance on non-visual ways to learn and navigate.
Shallow eye sockets can affect midface growth over time. This may lead to facial asymmetry or changes in eyelid position as the skull matures.
Some children have developmental delays or intellectual disability. Skills such as language, social interaction, and self-care may progress more slowly across childhood.
A subset develop seizures linked to brain structure differences in Anophthalmia plus syndrome. Seizure patterns can range from rare events to more frequent episodes over time.
How is it to live with Anophthalmia plus syndrome?
Living with Anophthalmia plus syndrome often means adapting to life without one or both eyes, along with other possible differences such as limb, ear, or brain structure changes that can affect movement, feeding, hearing, or learning. Daily life typically involves early and ongoing therapies—orientation and mobility training for safe navigation, tactile and auditory learning strategies, assistive technology, and regular visits with specialists to support growth, communication, and overall health. Families and caregivers become important partners in care, coordinating appointments and creating accessible routines at home and school, and many find that connecting with low-vision and disability communities offers practical tips and emotional support. While the medical needs can be frequent, children and adults with this condition can thrive with consistent support, tailored education plans, and environments built around their strengths.
Treatment and drugs
Treatment for Anophthalmia plus syndrome focuses on improving daily function, comfort, and development rather than restoring missing eyes. Care is usually coordinated by a team, and may include orbital expanders or custom conformers to gently shape the eye socket and facial bones as a child grows, eyelid surgeries to protect the socket, and ocular prostheses for appearance and support. Because this condition can affect other body systems, many people also need tailored therapies such as vision rehabilitation, early developmental services, hearing support, feeding or breathing help, and hormone or metabolic treatment if specific organ differences are present. Doctors sometimes recommend a combination of lifestyle changes and drugs, for example lubricating eye drops to keep sockets comfortable, antibiotics for infections, seizure medicines if needed, and targeted treatments for heart, kidney, or endocrine issues identified on evaluation. Keep track of how you feel, and share this with your care team, since plans are adjusted over time as needs change from infancy through adulthood.
Non-drug treatment
Care for Anophthalmia plus syndrome centers on helping a child move, communicate, and learn while also supporting facial growth and comfort. Non-drug treatments often lay the foundation for daily function, with surgery, devices, and therapies tailored to each child. Recognizing early symptoms of Anophthalmia plus syndrome can speed referrals to specialists and early-intervention services. Plans usually change as a child grows, with regular check-ins to match new needs.
A custom eye shell helps shape the eye socket and improve facial symmetry. It also protects the delicate inner tissues and supports eyelid function. Fittings are adjusted as your child grows.
Gradual expanders or conformers can gently widen the eye socket over time. This can reduce facial asymmetry and support prosthesis fit. Procedures are planned in stages by specialists.
Therapy focuses on safe movement and using touch and sound to explore and learn. Tactile books, auditory cues, and sensory play build confidence. Families get practical coaching for daily routines.
Physical, occupational, and speech therapies can begin in infancy. Early, steady practice supports motor skills, feeding, and communication. Services are adapted as milestones change.
Your genes may have an impact on how drugs work for you
Some medicines for people with Anophthalmia plus syndrome can work differently because gene changes affect how the body absorbs, breaks down, or responds to drugs. Pharmacogenetic testing may guide dosing or drug choice to improve benefits and reduce side effects.
Pharmacological treatments
Medicines for Anophthalmia plus syndrome focus on the symptoms you or your child have, such as seizures, hormone shortages, reflux, or muscle stiffness. Not everyone responds to the same medication in the same way. Treatment often changes over time as needs evolve and as growth, puberty, and feeding improve. Recognizing early symptoms of Anophthalmia plus syndrome can help doctors start the right drugs at the right time.
Levetiracetam or valproate can reduce seizure frequency and help protect learning and safety. Your care team will choose based on seizure type and side effects.
Somatropin can help children with growth hormone deficiency grow in height and build muscle. It is given as a daily injection with regular monitoring of growth and IGF‑1 levels.
Levothyroxine treats low thyroid levels that can cause fatigue, slow growth, and constipation. It is taken daily and doses are adjusted using blood tests.
Hydrocortisone replaces missing cortisol when the adrenal system is underactive. Extra “stress dosing” may be needed during illness, surgery, or injury.
Genetic influences
Genetic changes are a common cause of this condition, affecting how the eyes and other organs form very early in pregnancy. In Anophthalmia plus syndrome, a single gene change is often responsible, and it may be inherited from a parent or happen for the first time in a child. DNA testing can sometimes identify these changes. In some families, only one parent needs to pass on the change for a child to be affected, while in others the condition appears only when both parents carry the same hidden change. When the change arises for the first time in a child, parents typically do not have the condition themselves, and future chances in the family depend on the specific result. The impact of a gene change can vary, so two relatives with Anophthalmia plus syndrome may not share all the same features.
Is Anophthalmia plus syndrome genetic?
Genetics plays a central role in Anophthalmia plus syndrome. Most cases arise from rare variants in genes guiding early eye and organ development, often inherited in autosomal recessive or dominant patterns, with variable expressivity. Genetic testing informs diagnosis, prognosis, and family planning.
Pharmacogenetics—how genetics influence drug effects
For people with Anophthalmia plus syndrome, medicines are chosen based on the features you have—like seizure control, hormone replacement for pituitary issues, or pain control around procedures—more than on the specific syndrome gene. The genes that cause Anophthalmia plus syndrome don’t typically change how your body breaks down drugs, so drug response in Anophthalmia plus syndrome is usually shaped by the same common differences seen in the wider population. That means routine pharmacogenetic variation can still matter, especially for seizure medicines, some pain relievers, and mood medicines if those are needed. For example, differences in drug-processing genes can make codeine or tramadol too weak or too strong, can influence safe dosing of phenytoin, and certain HLA types can raise the risk of severe skin reactions with carbamazepine or oxcarbazepine (a concern seen more often in some Asian and Latin American groups). Treatment plans also consider age, body size, nutrition, vision-related daily needs, and any hormone issues, with doses adjusted to symptoms and lab results rather than a one-size-fits-all approach. Ask your doctor if pharmacogenetic testing could help tailor medicines you may need, especially before starting seizure drugs or if you’ve had unusual reactions.
Interactions with other conditions
Living with Anophthalmia plus syndrome often goes hand in hand with other health issues that affect feeding, breathing, hormones, and brain function. Doctors call it a “comorbidity” when two conditions occur together. Hormone problems from an underactive pituitary gland can interact with everyday illnesses; for example, low cortisol may make infections or surgery riskier unless stress-dose steroids are planned in advance. Brain differences and seizures may occur alongside this condition, and seizure medicines can sometimes affect alertness, coordination, or hormone balance, which matters if growth or puberty treatments are also being used. Airway or swallowing differences can increase reflux and the chance of food or liquid going “down the wrong way,” which may lead to chest infections; vision loss combined with possible hearing issues can further shape learning and communication needs. Interactions can look very different from person to person, so if early symptoms of Anophthalmia plus syndrome change when another condition flares, coordinated care and medication reviews can help keep plans safe and effective.
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.
History
Throughout history, people have described infants born without visible eyes or with unusually small eyes, sometimes alongside differences in the mouth, ears, or limbs. Families quietly compared notes across generations—an aunt recalling a cousin with missing eyes, a grandparent remembering a child with a small jaw and feeding difficulties. These community memories hinted that what we now call Anophthalmia plus syndrome can affect more than vision alone, shaping early feeding, breathing, and developmental needs.
First described in the medical literature as a combination of absent or very small eyes with other birth differences, early reports came from single families or a few cases gathered by careful clinicians. Photographs and detailed drawings helped doctors notice patterns: cleft palate or lip, ear shape differences, extra or fused fingers or toes, and differences in the brain or kidneys. Over time, descriptions became more precise as imaging improved and newborn care advanced, allowing teams to map features present at birth and those that emerge later, like growth patterns and learning needs.
As medical science evolved, investigators began to sort similar case reports into groups, comparing which features tended to cluster. Not every early description was complete, yet together they built the foundation of today’s knowledge. This is why older papers may use different names for overlapping findings; language shifted as doctors recognized that a shared root cause could explain changes seen in the eyes and other organs developed around the same time in early pregnancy.
In recent decades, knowledge has built on a long tradition of observation. Modern ultrasound and MRI made it easier to see eye and brain structures before and after birth. Surgical records and hearing tests added detail about function, not just appearance. Clinicians also learned that Anophthalmia plus syndrome varies: some people have both eyes affected, others only one; some have mild limb or ear differences, while others have more complex medical needs. This variability led to clearer criteria for diagnosis and more realistic counseling for families about early symptoms of Anophthalmia plus syndrome and what follow-up might look like.
Advances in genetics helped connect the dots. Researchers identified changes in several genes important for early head and face development, showing how a single change during a key window can influence multiple organs at once. Genetic testing also explained why the condition appears sporadically in many families yet can repeat in others, informing decisions about future pregnancies. Looking back helps explain why the condition once seemed rare and unpredictable; as records improved and testing became available, more people received the correct diagnosis, and care pathways became more coordinated. Today’s understanding reflects centuries of observation joined with modern imaging and genetics, turning scattered stories into a clearer picture and more supportive care.