Yes, many people with Williams syndrome (WS) show autistic traits or receive a dual diagnosis of autism spectrum disorder (ASD), even though WS is often called the "opposite of autism" due to its hallmark hypersociability; studies show significant overlap in social communication difficulties, restricted interests, and repetitive behaviors, with rates of co-occurring ASD much higher in WS than the general population. While WS involves extreme friendliness, individuals also struggle with social cues, understanding relationships, and sensory issues common in autism, making a dual diagnosis increasingly recognized.
Background The hallmark of the neurobehavioural phenotype of Williams-Beuren syndrome (WBS) is increased sociability and relatively preserved language skills, often described as opposite to autism spectrum disorders (ASD). However, the prevalence of ASD in WBS is 6–10 times higher than in the general population.
Williams syndrome is a rare genetic condition. It is characterised by distinctive physical features and behaviours, including a distinctive facial appearance, mild intellectual disability and an overly sociable personality.
Around 90% of autism cases are attributed to genetic factors, meaning autism is highly heritable, with many different genes contributing, rather than a single cause, often interacting with environmental influences during early brain development, though specific environmental factors don't cause it but can increase risk. Twin studies show strong genetic links, with concordance rates between 60-90% in identical twins, and research points to complex interactions of many genes and prenatal/perinatal factors.
People with WS were delayed in comprehending basic emotions of anger and surprise. Deviant replacement patterns of basic emotions in people with WS were observed. Deficient emotion knowledge may be a cause of atypical social cognition.
WS also is associated with a range of intellectual ability, from the rare individual in the average range for the general population through the equally rare individual in the severe intellectual disability range. Most individuals have overall IQs in the borderline to moderate intellectual disability range.
Several studies have examined aggression in Williams syndrome and a review of aggression is far less common in Williams syndrome (6-15%) compared to other syndromes such as Smith-Magenis, Prader-Willi and Angelman syndromes, who all have rates over 70%.
Additionally, inherited genetic variations contribute greatly. Research shows that both mothers and fathers can carry autism-related gene variants. Some of these are common variants that increase the risk of autism, while others are rare mutations causing more severe effects.
The "6-second rule" for autism is a communication strategy where a speaker pauses for about six seconds after asking a question or giving information, giving the autistic person extra time to process it without feeling rushed, which helps reduce anxiety and allows for a more thoughtful response, reducing frustration for both parties. Instead of repeating or rephrasing, which can be confusing, you wait, and if needed, repeat the exact same words after the pause.
Changes in the diagnostic criteria and increased screening at wellness visits seem to be the main contributors.
Individuals with WS exhibit consistent and unique patterns of social behavior, characterized by an overly friendly, affectionate, engaging, and socially disinhibited personality particularly toward strangers, apparent cross-culturally, and through separable channels of communication, such as eye gaze and language.
What are the symptoms of Williams syndrome?
This is thought to be due to a combination of genetic and neurological factors that affect the development of social and emotional skills in people with Williams syndrome. This trait is thought to be partly due to the deletion of several genes involved in the development of anxiety and fear.
Conditions That Can Be Mistaken for Autism. These include: Speech delays, hearing problems, or other developmental delays: Developmental delays are when your child doesn't do things doctors expect kids their age to be able to do. These can include language, speech, or hearing problems.
Changes with Age in Williams Syndrome
The profile of cognitive strengths and weakness reported in Williams syndrome also remains relatively stable with age, although some improvements with age are reported, particularly for performance IQ. Reading and spelling may improve but only minimally.
The different types of autism include autism spectrum disorder (ASD), autistic disorder (classic autism), Asperger's syndrome, pervasive developmental disorder not otherwise specified (PDD-NOS), childhood disintegrative disorder (CDD), and Rett syndrome.
Children with autism may exhibit rigidity, inflexibility and certain types of repetitive behavior such as: Insistence on following a specific routine. Having difficulty accepting changes in the schedule. A strong preoccupation with a particular interest.
Chinning is a form of repetitive self-stimulatory behavior (stimming) that you may notice in children or adults with autism. It involves pressing, rubbing, or holding the chin against objects, surfaces, or even hands to gain sensory input or comfort.
There's no single "hardest" age for autism; challenges shift across developmental stages, with preschool (2-5) often tough due to noticeable differences in social/language skills, elementary (6-10) marked by growing academic/social demands, and adolescence (11-17) frequently being overwhelming due to complex social pressures, puberty, and identity formation, say Bluebell ABA Therapy and Blossom ABA Therapy. While early childhood (ages 3-6) sees initial progress for many, this often stalls around age six, a critical turning point where increased support is crucial, according to research, notes The Transmitter.
Researchers are not sure what causes autism, but they believe genetic and environmental factors play a role. Risk factors can include having older parents or a sibling with ASD, genetic or chromosomal conditions like Down syndrome or fragile X syndrome, and very low birth weight.
Signs of autism in adults
It's something you're born with. Signs of autism might be noticed when you're very young, or not until you're older. If you're autistic, you're autistic your whole life. Autism is not a medical condition with treatments or a "cure".
Williams syndrome is a rare genetic condition characterized by unique physical features, delays in cognitive development and potential cardiovascular problems. Children born with Williams syndrome can have a normal life expectancy but may develop side effects from the condition that can affect their prognosis.
Common issues include: reflux, abdominal pain, constipation, diarrhea, irritable bowel syndrome, and dysmotility. Less common but significant issues include diverticulitis (at much younger age than is common in the general population)celiac disease, and gluten intolerance.
(7/15) The Myth: People with Williams syndrome can't/won't drive. Mythbuster: A small but growing number of individuals are obtaining licenses and drive themselves to work and around town daily – in cars or even a few on motorcycles.