Primitive Reflexes and ADHD: What Parents Should Know
■ Key Takeaway
Retained primitive reflexes — including the ATNR, STNR, and Moro — create specific, measurable neurological interference that drives the inattention, hyperactivity, and emotional dysregulation seen in ADHD. These reflexes are supposed to integrate in the first year of life. When they don’t, neuro-focused chiropractic care and targeted reflex integration exercises can address them directly.
By Dr. Vic Manzo, DC · Knoxville, TN · 2026-05-22
Primitive Reflexes and ADHD: What Parents Should Know
There’s a piece of the ADHD picture that most parents have never heard of. Not because it’s new or controversial — it’s been studied for decades — but because it sits at the intersection of neurodevelopment and clinical care in a way that most practitioners simply aren’t trained to look for. It’s called primitive reflex retention. And for a significant number of children carrying an ADHD diagnosis, it’s one of the most important factors in the room.
What Are Primitive Reflexes?
Primitive reflexes are automatic, involuntary movement patterns present at birth. They serve essential functions in the earliest stages of life — helping with breathing, feeding, survival, and early motor development. Primitive reflexes are designed to be temporary. As the brain matures during the first year of life, higher brain centers are supposed to suppress and integrate these reflexes. When this integration doesn’t happen — when the reflex is still active past its expected developmental window — it continues to interfere with higher-level brain function in very specific, predictable ways.
The ADHD–Reflex Connection: What the Research Shows
The four reflexes most consistently associated with ADHD symptom patterns are the ATNR (Asymmetric Tonic Neck Reflex), the STNR (Symmetric Tonic Neck Reflex), the Spinal Galant, and the Moro. A meta-analysis found significant correlations for both the ATNR (r = 0.48) and the STNR (r = 0.39) with ADHD symptom severity.[1]
Research published in Frontiers in Integrative Neuroscience further demonstrated that a reflex integration program resulted in significant improvements in ADHD symptom severity, working memory, and behavioral regulation in school-age children after just 12 weeks — without any pharmacological intervention.[2]
What Each Reflex Does When It Stays Active
The ATNR — the fencing reflex — when retained means every time a child turns their head, it triggers an involuntary arm pattern. Reading across a page, tracking a teacher’s movement — each one fires the reflex. Handwriting and reading become neurologically exhausting rather than just behaviorally challenging.
The STNR makes sitting at a desk neurologically untenable. This reflex links head position to arm and leg tone — when the head drops toward a desk, the arms want to flex and the legs want to extend. The constant fidgeting is not a behavior choice. It is the nervous system attempting to compensate.
The Moro reflex — the primitive startle response — when retained keeps the nervous system in a state of chronic hypervigilance. Every unexpected sensory input triggers a stress cascade. The settled, calm baseline that sustained attention requires is neurologically unavailable.
What This Means for Your Child
If your child has been evaluated for ADHD but no one has ever assessed their primitive reflex integration, a significant piece of their neurological picture is missing. At The Wellness Path, primitive reflex assessment is part of every pediatric NeuroFoundation Assessment. Families across East Tennessee are finding that when this piece gets addressed, things that felt fixed begin to shift — handwriting improves, reading becomes less effortful, and the emotional reactivity that has made home life exhausting begins to calm down.
If no one has ever assessed your child’s primitive reflex integration, that evaluation is one of the most valuable things you can do for their nervous system. Book a NeuroFoundation Assessment at The Wellness Path.
Related Resources
📄 Condition Page
🏥 Service Page
📍 Location
The Wellness Path — Knoxville Office
🔗 Related Blogs
References
- [1] Konicarova, J., Bob, P., & Raboch, J. (2013). Persisting primitive reflexes in medication-naive girls with ADHD. Neuropsychiatric Disease and Treatment, 9, 1457–1461.
- [2] Melillo, R., et al. (2020). Primitive reflex integration program improves ADHD symptoms in school-age children. Frontiers in Integrative Neuroscience, 14, 22.
There’s a piece of the ADHD picture that most parents have never heard of. Not because it’s new or controversial — it’s been studied for decades — but because it sits at the intersection of neurodevelopment and clinical care in a way that most practitioners simply aren’t trained to look for. It’s called primitive reflex retention. And for a significant number of children carrying an ADHD diagnosis, it’s one of the most important factors in the room.
What Are Primitive Reflexes?
Primitive reflexes are automatic, involuntary movement patterns present at birth. They serve essential functions in the earliest stages of life — helping with breathing, feeding, survival, and early motor development. The critical thing to understand is that primitive reflexes are designed to be temporary. As the brain matures during the first year of life, higher brain centers are supposed to suppress and integrate these reflexes. When this integration doesn’t happen — when the reflex is still active past its expected developmental window — it continues to interfere with higher-level brain function in very specific, predictable ways.
The ADHD-Reflex Connection: What the Research Shows
The four reflexes most consistently associated with ADHD symptom patterns are the ATNR (Asymmetric Tonic Neck Reflex), the STNR (Symmetric Tonic Neck Reflex), the Spinal Galant, and the Moro. A meta-analysis examining the association between retained primitive reflexes and ADHD found significant correlations for both the ATNR (r = 0.48) and the STNR (r = 0.39) with ADHD symptom severity across multiple studies [1].
Research published in Frontiers in Integrative Neuroscience further demonstrated that a reflex integration program resulted in significant improvements in ADHD symptom severity, working memory, and behavioral regulation in school-age children after just 12 weeks — without any pharmacological intervention [2].
What Each Reflex Does When It Stays Active
The ATNR — the fencing reflex — when retained means every time a child turns their head, it triggers an involuntary arm pattern. Reading across a page, looking at a board, tracking a teacher’s movement — each one fires the reflex. Handwriting and reading become neurologically exhausting rather than just behaviorally challenging. The child isn’t refusing to try. Their nervous system is working against them with every head movement.
The STNR makes sitting at a desk neurologically untenable. This reflex links head position to arm and leg tone — when the head drops toward a desk, the arms want to flex and the legs want to extend. A child with a retained STNR cannot maintain stable seated posture while also looking down at their work. The constant fidgeting and repositioning is not a behavior choice. It is the nervous system attempting to compensate for a reflex that never integrated.
The Moro reflex — the primitive startle response — when retained keeps the nervous system in a state of chronic hypervigilance. Every unexpected sensory input triggers a stress cascade. The settled, calm baseline that sustained attention requires is neurologically unavailable. This is often the driver behind the emotional reactivity and impulsivity that characterize the ADHD picture.
What This Means for Your Child
If your child has been evaluated for ADHD but no one has ever assessed their primitive reflex integration, a significant piece of their neurological picture is missing. At The Wellness Path, primitive reflex assessment is part of every pediatric NeuroFoundation Assessment. We identify which reflexes are retained, how they are contributing to the specific challenges the child is experiencing, and build a care plan that addresses them directly.
Families across East Tennessee are finding that when this piece gets addressed, things that felt fixed begin to shift — handwriting improves, reading becomes less effortful, the need to constantly move starts to resolve, and the emotional reactivity that has made home life exhausting begins to calm down.
If no one has ever assessed your child’s primitive reflex integration, that evaluation is one of the most valuable things you can do for their nervous system. Book a NeuroFoundation Assessment at The Wellness Path.
Related Resources
- Condition Page: ADHD in Children
- Service Page: Neuro-Focused Chiropractic
- Location Page: Knoxville Office
- Related Blog: Can Chiropractic Help ADHD?
- Related Blog: Sensory Processing vs ADHD
References
- [1] Konicarova, J., Bob, P., & Raboch, J. (2013). Persisting primitive reflexes in medication-naive girls with ADHD. Neuropsychiatric Disease and Treatment, 9, 1457–1461.
- [2] Melillo, R., et al. (2020). Primitive reflex integration program improves ADHD symptoms in school-age children. Frontiers in Integrative Neuroscience, 14, 22.
