Autism Spectrum Disorder: Why Diagnoses Are Increasing—and What That Really Means

In recent years, more people than ever are being diagnosed with autism spectrum disorder (ASD). This rise has led to important conversations—and sometimes confusion—about whether autism itself is becoming more common, or whether something else is driving the increase.

At the same time, growing awareness has highlighted the wide range of experiences within autism, including individuals with more significant support needs, sometimes referred to as profound autism.

Understanding these trends requires looking at how definitions, awareness, and diagnostic practices have evolved over time.

What Is Autism Spectrum Disorder?

Autism spectrum disorder is a neurodevelopmental condition that affects how individuals experience the world, communicate, and interact with others. It is described as a “spectrum” because it includes a wide range of strengths, challenges, and support needs.

Core features of autism may include:

• Differences in social communication and interaction

• Repetitive behaviors or restricted interests

• Sensory sensitivities or differences

• Preference for routine or predictability

Importantly, autism is not a single, uniform experience. Some individuals require minimal support in daily life, while others need substantial, ongoing assistance.

Why Are Autism Diagnoses Increasing?

The rise in autism diagnoses is well-documented, but it does not necessarily mean that autism itself is suddenly more common. Instead, several key factors have contributed to increased identification.

1. Broader Diagnostic Criteria

Early descriptions of autism were quite narrow and often focused on individuals with more severe presentations. Over time, diagnostic criteria have expanded to include a broader range of traits and levels of support needs.

In earlier decades, individuals who might now be diagnosed with autism may have instead been labeled with:

• Intellectual disability

• Language disorders

• Behavioral disorders

• Or not diagnosed at all

The shift to a spectrum-based model has allowed for more accurate and inclusive identification.

2. Increased Awareness and Screening

Awareness of autism among parents, educators, and healthcare providers has grown significantly.

Today, many children are screened for developmental differences at a young age, and adults are increasingly seeking evaluations after recognizing traits in themselves or their children.

This increased awareness has led to:

• Earlier diagnosis in children

• Identification of individuals who may have previously been overlooked

• More diagnoses among girls and women, who were historically underdiagnosed

3. Changes in Access to Services

In many regions, an autism diagnosis can help individuals access:

• Educational supports

• Therapy services

• Accommodations in school or work settings

As a result, there is greater motivation for families and clinicians to pursue accurate diagnoses when concerns arise.

4. Improved Diagnostic Practices

Clinicians now have better tools and training to recognize autism across different presentations.

There is also increased recognition that autism can present differently depending on factors such as:

• Gender

• Culture

• Cognitive ability

• Co-occurring conditions (such as ADHD or anxiety)

This has contributed to more nuanced and accurate diagnoses.

Has Autism Itself Become More Common?

This is an ongoing area of research and discussion.

While some studies explore environmental or biological factors that may influence neurodevelopment, most experts agree that the major drivers of increased diagnosis are changes in awareness, criteria, and identification, rather than a dramatic rise in the underlying condition itself.

In other words, autism has likely always existed at similar rates, but we are now better at recognizing it.

Understanding Profound Autism

Within the broader autism spectrum, there is a subgroup sometimes referred to as profound autism. While not a separate diagnostic category in formal manuals, this term is often used to describe individuals with:

• Significant intellectual disability

• Limited or no verbal communication

• High support needs across daily living activities

• Greater likelihood of requiring lifelong care

Individuals with profound autism may also experience:

• Severe sensory sensitivities

• Self-injurious or repetitive behaviors

• Medical or neurological co-occurring conditions

These individuals often require intensive, multidisciplinary support, including specialized educational environments, medical care, and caregiver involvement.

Has the Presentation of Profound Autism Changed Over Time?

Unlike broader increases in autism diagnoses, there is less evidence to suggest that the prevalence of profound autism has changed significantly over time.

What has changed is:

1. Visibility and Recognition

In earlier decades, individuals with profound autism were often:

• Misdiagnosed or grouped under other categories (such as intellectual disability)

• Institutionalized or separated from community settings

• Less visible in public and educational environments

Today, there is greater effort to provide inclusive education, community-based support, and specialized services, increasing visibility and awareness.

2. Improved Support and Care

Advances in healthcare, education, and therapeutic interventions have improved outcomes and quality of life for many individuals with high support needs.

Families now have greater access to:

• Early intervention services

• Communication supports (such as augmentative and alternative communication devices)

• Behavioral and developmental therapies

• Community-based resources

3. Broader Spectrum Inclusion

As diagnostic criteria expanded, the autism spectrum came to include a wider range of individuals, including those with lower support needs. This has contributed to the overall increase in diagnoses, even though the proportion of individuals with profound autism may remain relatively stable.

Balancing Awareness Across the Spectrum

One important consideration in modern discussions of autism is ensuring that all individuals across the spectrum are represented and supported.

While increased recognition of individuals with lower support needs has been an important step forward, it is equally important not to overlook those with more complex and intensive needs.

A balanced approach includes:

• Supporting independence and self-advocacy where possible

• Providing comprehensive care for those with high support needs

• Recognizing the diversity of experiences within autism

Moving Toward Understanding

The rise in autism diagnoses reflects a broader cultural and clinical shift toward recognition, inclusion, and understanding of neurodevelopmental differences.

Rather than viewing this increase as a cause for alarm, it can be seen as progress—an indication that more individuals are being identified, supported, and understood.

At the same time, ongoing awareness is needed to ensure that individuals with profound autism—and their families—receive the resources, care, and recognition they deserve.

A More Inclusive Perspective

Autism is not new—but our understanding of it continues to evolve.

As awareness grows, so does the opportunity to build systems that are more responsive to diverse needs. Whether someone requires minimal support or lifelong care, the goal remains the same: to create a world that allows individuals on the spectrum to live with dignity, support, and meaningful connection.

By recognizing both the breadth of the spectrum and the depth of individual experiences, we move closer to a more inclusive and compassionate approach to ASD. Lakeside Integrative NP's in Psychiatry is here to support families and individuals by remembering all these nuances and more about this consistently evolving diagnosis!