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What is Autism? A Guide to Autism Spectrum Disorder (ASD)

What is Autism? A Guide to Autism Spectrum Disorder (ASD)

Learning that your child has received an autism diagnosis can be coupled with a range of emotions – from relief to uncertainty about the future. As parents navigate this journey, one of the first and most important steps is understanding: “What is autism?”

Understanding Autism Spectrum Disorder (ASD)

Autism Spectrum Disorder (ASD), more commonly known as “autism” is a complex developmental condition that affects how a person perceives and interacts with the world around them. Every child with autism is unique, but there are common patterns of behavior and areas of need that each child may display.

Autism is often characterized by delays and differences in communication and socialization as well as repetitive behaviors or intense interests. While autism can be diagnosed at any age, signs typically appear during the first two years of life. This neurodevelopmental disorder impacts people regardless of gender, race, ethnicity, or socioeconomic background.

Why Is It Called a Spectrum?

The term “spectrum” in autism spectrum disorder reflects the wide variety of challenges and strengths possessed by each person with autism. No two individuals with autism are exactly alike. While some people may require significant support in their daily lives, others may grow to be very independent

Key Characteristics of Autism

Social Communication and Interaction

People diagnosed with autism may experience challenges in:

  • Understanding and using verbal and non-verbal communication
  • Developing and maintaining relationships
  • Reading social cues and understanding social situations
  • Expressing emotions or understanding others’ feelings

Behavioral Patterns

Common behavioral characteristics include:

  • Repetitive movements or speech patterns
  • Strict adherence to specific routines
  • Intense interests in particular topics or objects
  • Unusual responses to sensory experiences (sounds, lights, textures)

Early Signs and Diagnosis

Autism Spectrum Disorder (ASD) encompasses a wide range of behaviors and traits, which is why it’s called a “spectrum. There are often signs in early childhood that may indicate a need for a professional evaluation.

While every child develops differently, parents need to trust their intuition and seek support from their pediatrician if any of these early signs are present. Early diagnosis is key because it opens the door to services and support that can help a child grow, learn, and thrive.

Communication Signs

Delayed Speech Development:

  • Limited or no babbling by 12 months
  • Not speaking single word by 16 months
  • Repeating words or phrases (echolalia)
  • Giving unrelated answers to questions

Social Interaction Signs

Limited Social Engagement:

  • Not responding to their name by 12 months
  • Avoiding eye contact
  • Preferring to play alone
  • Difficulty understanding others’ emotions

Developmental Milestones

Delayed Milestone Achievement:

  • Not pointing to objects of interest by 14 months
  • Absence of pretend play by 18 months
  • Limited or no gesture use (waving, pointing)

Repetitive Behaviors

Self-stimulatory behaviors (“stimming”), such as:

  • Hand flapping
  • Rocking
  • Spinning in circles
  • Moving objects in specific patterns
  • Looking at items out of the corner of their eye

Routine and Sensory Sensitivities

  • Strong preferences for routines and structure
  • Unusual reactions to:
    • Sounds
    • Smells
    • Tastes
    • Textures
    • Visual stimuli

Autism Diagnosis

Early identification of autism is crucial for accessing appropriate interventions and support. The American Academy of Pediatrics recommends developmental screenings at:

  • 9 months
  • 18 months
  • 24 or 30 months

Medical professionals, including pediatricians, psychiatrists, and psychologists, can diagnose autism through comprehensive behavioral and developmental assessments. While autism can be reliably diagnosed as early as age two, many children receive their diagnosis later.

Steps to Take If You're Concerned

  1. Document Your Observations
    • Keep a record of behaviors that concern you
    • Note when these behaviors occur
    • Track your child’s developmental milestones
  2. Consult Your Pediatrician
    • Share your concerns promptly
    • Request developmental screenings
    • Ask about referrals to specialists
  3. Seek Professional Diagnosis
    • Important for accessing services
    • Required for insurance coverage
    • Helps guide intervention planning

Understanding Autism Support Levels

When diagnosed with autism, individuals are typically assigned one of three support levels, helping families and healthcare providers plan appropriate interventions:

Autism Spectrum Disorder (ASD) Level 1: Requiring Support

This is the lowest level which requires the least amount of support. People with Level 1 autism are more likely to have mild symptoms and can often communicate through conversation. Some individuals at this level may find it hard to make friends and maintain social relationships while also having difficulty adapting to changes in routine.

  • Challenges with social communication
  • Difficulty initiating interactions
  • Some inflexibility in behavior
  • May need help with organization and planning

Autism Spectrum Disorder (ASD) Level 2: Requiring Substantial Support

This level is marked by deficits in verbal and nonverbal communication. Additionally, a person diagnosed with ASD Level 2 may suffer from social impairments that limit their ability to respond to social overtures from others. Restrictive and repetitive behaviors occur at a level that interfere with daily functioning across a variety of contexts which may cause distress for the individual and their caregivers.

  • Marked deficits in verbal and non-verbal communication
  • Limited social interactions
  • Inflexible behaviors that interfere with daily functioning
  • Difficulty coping with change
  • Need for daily support

Autism Spectrum Disorder (ASD) Level 3: Requiring Very Substantial Support

A person whose autism diagnosis is categorized as Level 3 displays severe deficits in verbal and non-verbal communication and social interaction skills. A person may have few or no words which impedes their ability to communicate their wants and needs. Extreme difficulty coping with change as well as frequent restricted and repetitive behavior cause great distress for the person and their caregivers. This is the most severe level of autism and requires the most intensive level of support, likely across a person’s lifetime.

  • Severe challenges in verbal and non-verbal communication
  • Very limited social interaction
  • Highly restricted/repetitive behaviors
  • Extreme difficulty coping with change
  • Need for constant support

Treatment and Intervention Options

There is no cure for autism but early intervention, such as applied behavior analysis (ABA), has been shown to effectively reduce the severity of symptoms and teach new skills so that a child is more easily able to navigate their world.

Applied Behavior Analysis (ABA)

ABA therapy stands as the gold standard for autism treatment. Endorsed by the U.S. Surgeon General as one of the most effective evidence-based interventions, ABA therapy offers a systematic approach to improving behaviors and teaching new skills.

Through carefully crafted treatment plans individualized to each child’s needs, our team continuously measures progress and adjusts programs accordingly. Studies consistently demonstrate that when children receive early, intensive ABA therapy, they can achieve significant developmental gains.

Through ABA therapy:

  • Children improve their communication to effectively express their wants and needs
  • Challenging behaviors are reduced to improve safety
  • Daily living skills are taught to improve independence
  • Participation in play and leisure skills is enhanced
  • Socialization, play, and peer relationships are emphasized
  • Treatment plans are individualized to each child’s needs
  • Progress is continuously measured and programs adjusted accordingly
Want to learn more about how ABA therapy can help your child?

Want to learn more about how ABA therapy can help your child?

Visit our guide "What is ABA Therapy?" to understand how this evidence-based treatment works and why it might be right for your child.

Additional Interventions

A comprehensive treatment approach often includes multiple therapeutic approaches:

  • Speech and Language Therapy
  • Occupational Therapy
  • Social Skills Training
  • Educational Support Services

Many families find that combining these interventions with ABA therapy provides the most comprehensive support for their child’s development.

Risk Factors and Causes

The exact causes of autism have yet to be determined, however, scientists and researchers have been able to determine some factors that may make autism more or less likely. We know that genes, in conjunction with the environment, can act together in different ways to affect development and change outcomes. According to the Center for Disease Control, some risk factors for autism are:

  • Having a sibling with autism
  • Having older parents
  • Very low birth weight
  • Having certain genetic conditions: People with Down syndrome, Fragile X syndrome, and Rett syndrome are more likely than others to have autism

Supporting Your Child with Autism

Every child with autism has unique strengths and challenges. Working closely with healthcare providers, therapists, and educators can help develop an effective support plan. Remember that early intervention is key – the sooner appropriate supports are in place, the sooner you and your child will benefit from learning new skills and overcoming challenges

When to Seek Professional Help

If you notice any of the following signs in your child, consult with your pediatrician:

  • Limited or no eye contact
  • Delayed speech or language skills
  • Repetitive behaviors
  • Difficulty with changes in routine
  • Limited social interaction
  • Unusual responses to sensory experiences

Understanding autism is the first step in providing effective support for individuals with ASD. While each person’s journey with autism is unique, with appropriate support and intervention, individuals with autism can lead fulfilling lives and reach their full potential.

If you’re concerned about your child’s development or seeking support for an autism diagnosis, contact healthcare professionals who can provide guidance and resources specific to your situation.*