Understanding Autism: ASD Levels, Symptoms, and DSM-5 Diagnosis

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By Autism Center for Kids | Serving Vaughan, Oakville, and Greater Toronto Area

DSM-5 Diagnosis-Understanding Autism At Autism Center for Kids, we support families with early intervention, play therapy, and autism therapy alternatives to ABA. Whether you’re a parent searching for answers or a professional seeking clarity, understanding the different aspects of autism—like ASD levels, early symptoms, and DSM-5 criteria—is essential.

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DSM-5 Diagnosis-What Are the ASD Levels?

Autism Spectrum Disorder (ASD) is categorized into three levels under the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, 5th Edition), which helps clinicians understand the level of support a person may need:

• Level 1: Requiring Support
  Individuals may struggle with social communication and inflexible behaviors but can often function independently with minimal support.
• Level 2: Requiring Substantial Support
  Marked deficits in verbal and nonverbal social communication skills. Routines and repetitive behaviors are more apparent.
• Level 3: Requiring Very Substantial Support
  Severe challenges in social communication and behavior. Individuals may be nonverbal or highly resistant to change.

Understanding ASD levels helps guide therapy plans tailored to the child’s individual needs, something we prioritize at Autism Center for Kids through in-house, play-based approaches.

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DSM-5 Diagnosis-Autism Symptoms in Newborns: What to Watch For

While a formal diagnosis usually happens after age two, subtle signs of autism may appear in infancy. Common early symptoms of autism in newborns may include:

• Lack of eye contact or facial engagement
• Delayed babbling or cooing
• Minimal interest in social interaction (e.g., smiling back or reacting to sounds)
• Limited response to their name
• Rigid body movements or sensory sensitivity

If you notice any of these signs, early screening is key. Our clinicians can guide you through next steps in observation and referral—without rushing to conclusions.

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DSM-5 and Autism Spectrum Diagnosis

The DSM-5 replaced older terms like Asperger’s Syndrome or PDD-NOS with a single diagnosis: Autism Spectrum Disorder. Diagnosis is now based on two main criteria:

1. Persistent deficits in social communication and interaction, including trouble with eye contact, understanding relationships, or nonverbal cues.
2. Restricted, repetitive patterns of behavior, interests, or activities, such as lining up toys, routines, or intense fixations.

Symptoms must be present in early childhood and interfere with everyday functioning.

This framework makes diagnosis more inclusive and individualized—perfectly aligning with our personalized approach at Autism Center for Kids.

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DSM-5 Diagnosis-Adult Autism Assessment Test: Late Diagnosis Support

Autism is not just a childhood condition. Many adults discover they are on the spectrum later in life. Adult autism assessment tests can help uncover patterns of social and sensory differences that went unnoticed in childhood.

Tests commonly used include:

• The Autism Spectrum Quotient (AQ)
• RAADS-R (Ritvo Autism Asperger Diagnostic Scale-Revised)
• ADOS-2 (Autism Diagnostic Observation Schedule)

If you’re an adult questioning whether you’re on the spectrum, we offer support and referral guidance tailored to your needs—without judgment.

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DSM-V and the Autism Spectrum: How It All Connects

The DSM-V autism spectrum criteria shifted focus from labels to levels of support. This change allows therapists, educators, and families to tailor interventions that are flexible, holistic, and relevant.

At Autism Center for Kids, we believe in neurodiverse-friendly care. Our non-ABA therapy services (like play therapy and sensory integration) align with this DSM-V perspective—seeing each child as unique rather than just a diagnosis.

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Support Starts Here

Whether you’re noticing early signs in your baby or seeking support for an adult assessment, Autism Center for Kids is here for you. We proudly serve families across Vaughan, Oakville, Toronto, and beyond—offering therapeutic solutions that focus on empathy, creativity, and personalized care.

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📞 Call us today to book a consultation
🌐 Visit our website for resources and support
📍 Locations in Vaughan & Oakville

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