OT, PT, and speech therapy all serve different purposes. This guide explains what each addresses for autism and ADHD, how to determine what your child needs, and how to sequence when you can't start everything at once.
After an autism or attention-deficit/hyperactivity disorder (ADHD) diagnosis, therapy referrals often arrive in a cluster. The evaluation report recommends occupational therapy. The pediatrician mentions speech. A parent in an online group swears by physical therapy for sensory regulation. And you're left trying to figure out whether your child needs all of it, some of it, which to start first, and how any of it gets paid for.
This guide breaks down what each therapy type actually addresses, how to determine which is most relevant for your child's specific profile, and how to think about sequencing when you can't start everything at once.
Occupational Therapy (OT)
Occupational therapy addresses a child's ability to function in daily life—the "occupations" of childhood, which include play, self-care, learning, and social participation. For children with autism spectrum disorder (ASD) or ADHD, OT most commonly targets sensory processing difficulties, fine motor skills (handwriting, scissors, utensils), self-care tasks (dressing, grooming), emotional regulation, and executive function skills like organization and transitions.
OT is the most commonly recommended therapy for children with ASD and ADHD combined. If your child has sensory sensitivities—under- or over-responding to sound, touch, movement, or other input—OT using a sensory integration framework is typically the first line of support.
Speech-Language Therapy
Speech-language pathology (SLP) covers communication in its broadest sense—not only articulation, but language comprehension, expressive language, social use of language (pragmatics), and for nonverbal or minimally verbal children, augmentative and alternative communication (AAC) systems.
For children with ASD, speech therapy is almost universally indicated. The specific goals vary enormously: a nonverbal four-year-old and a verbally fluent ten-year-old who struggles with conversation turn-taking both need SLP services, but for entirely different reasons. For children with ADHD, SLP addresses verbal working memory, following multi-step directions, and organizing spoken and written communication.
Physical Therapy (PT)
Physical therapy focuses on gross motor skills—the large-muscle movements involved in walking, running, jumping, balance, and coordination. PT is less universally recommended for autism and ADHD than OT or SLP, but it is indicated when a child has significant delays in motor development, low muscle tone (hypotonia), coordination difficulties that affect mobility, or gross motor skills that lag behind peers in ways that impact participation in daily activities.
Some children with ASD have co-occurring developmental coordination disorder (DCD) or hypotonia that makes PT a clear priority. For children with ADHD, PT is less commonly the first referral unless motor coordination is a specific concern.
The most reliable guide is your child's evaluation report. A comprehensive psychoeducational or developmental evaluation will typically flag which domains are areas of concern and may directly recommend specific therapy types. Read the recommendations section carefully—it's the starting point, not a formality.
If the report isn't definitive, the following profile questions help clarify priorities:
Prioritize SLP if: your child is nonverbal or has limited functional communication, struggles significantly with understanding spoken language, has notable difficulty with social conversation or pragmatics, or received a communication delay finding in the evaluation.
Prioritize OT if: your child has significant sensory sensitivities or seeking behaviors that disrupt daily function, struggles with fine motor tasks, has difficulty with self-care routines, or has emotional regulation challenges that appear sensory-driven.
Prioritize PT if: your child has low muscle tone, delayed gross motor milestones, significant coordination difficulties, or difficulty with physical activities that affect their participation in school or play.
Many children need more than one. The question of sequencing is separate from the question of which is indicated.
Waitlists, insurance limits, scheduling, and bandwidth all constrain how many therapies a family can realistically pursue simultaneously. A few principles help with prioritization:
Follow the evaluation's lead. If the report identifies one area as the most significant concern, start there. A nonverbal child's most urgent need is communication; sensory regulation can be layered in once SLP is underway.
Consider what's blocking the most. Which deficit is creating the most downstream difficulty in your child's daily life right now? For a child who can't communicate basic needs, that's the priority. For a child who is so dysregulated by sensory input that they can't participate in school or therapy, OT may need to come first.
School-based services can run in parallel. If your child has or is pursuing an Individualized Education Program (IEP), school-based OT and SLP services can begin while you wait for private providers. School and private therapy address different goals and are complementary, not redundant.
Get on multiple waitlists immediately. Therapy waitlists run 3 to 9 months in many markets. Deciding to "start with OT and then add SLP" can mean a year's delay on speech services. Get on all relevant waitlists at once, take appointments as they open, and adjust from there.
Your child's evaluation report is the right starting point for this decision—but turning recommendations into actual appointments is where families most often get stuck. Use the What's Next Health AI assistant to help prioritize therapies based on your child's specific profile, then use our provider directory to begin your search. For detailed guidance on finding providers, see our guides on how to find an occupational therapist and how to find a speech-language pathologist.
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