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Atypical Autism (PDD-NOS): Symptoms, Diagnosis, and Support Strategies

Therapy Checklist for PDD-NOS & Autism Spectrum

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Reviewed by Dr. Eva Lassey, PT, DPT

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Last updated: June 2026

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Key Takeaways

Therapy for Atypical Autism (PDD-NOS) and the broader autism spectrum generally draws on the four areas covered here: speech-language pathology, occupational therapy, behavioral interventions, and educational interventions.⁠¹
Speech therapy for PDD-NOS goes beyond vocabulary to focus on the social and practical use of language, including pragmatic skills like turn-taking and staying on topic, nonverbal communication, and self-advocacy.⁠²
Occupational therapy builds skills for daily living like grooming, feeding, and dressing, along with fine and gross motor skills, and may use sensory-based approaches, although research on sensory integration therapy is limited.⁠^1,3
Behavioral interventions offer structured ways to learn new skills, with Applied Behavior Analysis (ABA) reinforcing desired behaviors; Cognitive Behavioral Therapy (CBT) adapted for autism has helped children and teens who can take part in talk therapy manage anxiety.⁠^1,4
A useful first step in occupational therapy is requesting a comprehensive sensory profile assessment and working with the therapist to create a personalized sensory diet for home and school.

Speech-language pathology
Occupational Therapy (OT)
Behavioral Interventions
Educational Interventions

14 min read

Navigating therapy options for Atypical Autism (PDD-NOS) and the broader autism spectrum can feel overwhelming. We created this comprehensive checklist to help parents, caregivers, and individuals identify and track the main kinds of support and what the evidence says about them. PDD-NOS is no longer diagnosed on its own: since the DSM-5 in 2013, anyone with a well-established PDD-NOS diagnosis is given the diagnosis of autism spectrum disorder,⁠⁵ so the therapies below are the same ones used across the autism spectrum.

Use this guide to prepare for medical evaluations, set goals with providers, and ensure your current support plan covers all necessary developmental areas.

1. Speech-language pathology

Speech therapy for PDD-NOS goes beyond basic vocabulary. It focuses heavily on the social and practical use of language, ensuring individuals can communicate their needs and connect with peers effectively.⁠²

Core Focus Areas:

Pragmatic Language: Learning how to take turns in conversation, stay on topic, and understand humor or sarcasm.⁠²
Nonverbal Communication: Reading body language, making appropriate eye contact, and interpreting facial expressions.⁠²
Self-Advocacy: Expressing boundaries, asking for help, and communicating discomfort.⁠²

Your Action Checklist:

Schedule an initial speech and language evaluation to assess pragmatic language skills.
Identify 2–3 specific communication goals for daily life (e.g., initiating play, asking for a break).
Ask the therapist for strategies to practice turn-taking during family meals or playtime.
Request visual supports or social stories to help navigate new or stressful communication scenarios.

2. Occupational Therapy (OT)

Occupational therapy teaches skills that help a person live as independently as possible, such as dressing and eating, and often works on sensory processing differences, which are part of the autism diagnostic criteria.⁠^1,5 Sensory-based therapy can be one part of a treatment plan, but research on how well sensory integration therapy works is limited and inconclusive, so agree with the therapist on a trial period and on how you will judge whether it is helping.⁠³

Core Focus Areas:

Sensory Integration: Managing sensitivities to sound, touch, or light, and safely fulfilling sensory-seeking behaviors.⁠¹
Motor Skills: Improving fine motor skills (handwriting, buttoning clothes) and gross motor coordination (balance, jumping).
Daily Living Skills (ADLs): Building independence in grooming, feeding, and dressing.⁠¹

Your Action Checklist:

Request a comprehensive sensory profile assessment from a licensed occupational therapist.
Work with the OT to create a personalized “sensory diet” for home and school.
Identify any daily tasks that cause frustration (e.g., brushing teeth, wearing certain fabrics) and target these in sessions.
Set up a sensory-friendly space at home with tools your therapist suggests (e.g., noise-canceling headphones). Weighted blankets have not been shown to improve sleep in autistic children, though they may suit some children.⁠⁶

3. Behavioral Interventions

Behavioral approaches have the most evidence for treating symptoms of autism, and psychological approaches such as CBT can help with anxiety and other mental health concerns.⁠¹

Core Focus Areas:

Applied Behavior Analysis (ABA): Focuses on reinforcing positive behaviors, breaking down complex tasks into manageable steps, and improving communication.⁠¹
Cognitive Behavioral Therapy (CBT): Anxiety is common in autistic children and teens. In trials with children who could take part in talk therapy, CBT adapted for autism reduced anxiety more than waitlist or usual care.⁠⁴

Your Action Checklist:

Consult with a developmental pediatrician or psychologist to determine which behavioral approach best fits your specific needs.
For ABA: Ensure the program is play-based, child-led, and focuses on functional life skills rather than masking natural behaviors.
For CBT: Find a therapist experienced in neurodivergence who can adapt cognitive exercises for autism spectrum profiles.
Establish a clear system for communicating with behavior therapists to ensure strategies remain consistent at home.

4. Educational Interventions

Success in the classroom requires targeted support. Educational interventions formally accommodate an individual’s unique learning profile and sensory needs.

Core Focus Areas:

Individualized Education Program (IEP): A written plan, required by federal special education law, that sets out the special education and related services (like in-school OT or speech therapy) the school will provide.⁠^7,8
504 Plan: Section 504 requires schools to provide the regular or special education and related aids and services a student with a disability needs, as adequately as other students’ needs are met.⁠⁹ A 504 plan most often sets out accommodations (like extended testing time or sensory breaks) for students who need support to access the general curriculum but not an IEP.

Your Action Checklist:

Submit a written request to your school district for a formal educational evaluation.
Gather all private medical diagnoses, therapy reports, and sensory profiles to share with the school team.
Outline specific classroom accommodations you want to request (e.g., preferential seating, access to a quiet zone, visual schedules).
Schedule regular check-ins with the teacher and case manager to review progress and adjust the plan as needed.

Need Help Taking the Next Step?

Bring this checklist to your next pediatrician appointment or use it to guide your search for local specialists. Building a strong, multidisciplinary therapy team takes time, but working through these four areas helps make sure no part of your child’s support is missed.

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Frequently Asked Questions

What types of therapy help children with PDD-NOS or autism spectrum disorder?

Common approaches include speech-language pathology, occupational therapy, behavioral interventions, and educational interventions, and behavioral approaches have the most evidence.⁠¹ Together these address communication, sensory and daily living skills, and social and emotional needs.

What does speech therapy focus on for a child with PDD-NOS?

It goes beyond basic vocabulary to focus on the social and practical use of language. Core areas include pragmatic language (such as taking turns, staying on topic, and understanding humor or sarcasm), nonverbal communication, and self-advocacy.⁠²

How can occupational therapy help my child with sensory issues?

Occupational therapy addresses sensory processing differences while building daily living skills, helping manage sensitivities to sound, touch, or light and safely meeting sensory-seeking needs. A therapist can complete a sensory profile assessment and create a personalized sensory diet for home and school. Research on sensory integration therapy is limited, so agree with the therapist on how you will judge whether it is helping.⁠^1,3

What is the difference between ABA and CBT for autism?

Applied Behavior Analysis (ABA) reinforces positive behaviors, breaks complex tasks into manageable steps, and improves communication. Cognitive Behavioral Therapy (CBT) adapted for autism has reduced anxiety, which is common in autism, in trials with children and teens who could take part in talk therapy.⁠^1,4

How can I prepare for my child's therapy evaluations?

You can use a therapy checklist to prepare for medical evaluations, set goals with providers, and make sure your support plan covers all necessary developmental areas. Helpful steps include scheduling a speech and language evaluation, requesting a sensory profile assessment, and identifying two to three specific communication goals for daily life.

Can my child receive these therapies through school instead of privately?

Often yes, and the two routes answer different questions. School-based services are provided to support access to education, so they are tied to how the difficulty affects the school day and are set out in an IEP or 504 plan. Private therapy can address goals outside that, and is not limited to educational impact. Many families use both, and it is worth telling each side what the other is working on.⁠⁸

Therapy Checklist for PDD-NOS & Autism Spectrum

Key Takeaways

1. Speech-language pathology

2. Occupational Therapy (OT)

3. Behavioral Interventions