If your child struggles to sit still, has difficulty reading, seems clumsy, or gets overwhelmed easily, you may have heard that it could be related to something called retained primitive reflexes. Most parents have never heard this term — and yet it is one of the most common and least-recognized root causes behind learning challenges, sensory issues, and behavioral struggles in children. Understanding what primitive reflexes are and what happens when they do not integrate properly can be the missing piece your family has been searching for.
Every baby is born with a set of automatic movement patterns called primitive reflexes. These reflexes are hardwired into the brainstem and are essential for survival in the first months of life. They help newborns breathe, feed, and respond to their environment before the higher brain centers have had a chance to fully develop. As your child grows, these reflexes are supposed to “integrate” — meaning they become absorbed into more mature, voluntary movement patterns controlled by the higher brain. When that integration does not happen on schedule, the reflex stays active long past its usefulness.
At Alive and Free Chiro, Dr. Cody works with families across Cooper City and South Florida who are looking for answers beyond traditional interventions. By addressing the neurological root cause — the nervous system’s ability to process and integrate sensory information — neurologically-focused chiropractic care can play a powerful role in helping children move past the developmental roadblocks that retained primitive reflexes create.
What Are Primitive Reflexes — and Why Do They Matter?
Primitive reflexes are involuntary, automatic movement responses that originate in the brainstem. They are present from birth and serve critical survival functions in early infancy. The startle response that helps a newborn react to sudden loud noises, the rooting reflex that helps a baby turn toward the breast, and the grasping reflex that helps an infant grip a finger — all of these are primitive reflexes doing exactly what they are supposed to do.
Under normal developmental circumstances, these reflexes gradually hand over control to the higher cortical regions of the brain — particularly the cerebellum and prefrontal cortex — as a child gains more complex motor and cognitive skills. When a reflex integrates properly, the child gains greater control over their body, their attention, and their emotions. When a reflex does not integrate, it stays active as an “immature” loop in the nervous system. This creates a constant low-level interference that disrupts everything from posture and balance to focus and emotional regulation.
Think of it this way: a retained primitive reflex is like a fire alarm that will not stop going off even when there is no fire. The nervous system is stuck in a lower, more reactive mode when it should have moved on to more sophisticated processing. Children with retained reflexes are not choosing to be disruptive, hyperactive, or clumsy — their nervous system is genuinely struggling to keep up with what is being asked of it.
Common Primitive Reflexes and When They Should Integrate
There are several key primitive reflexes that, when retained, are most likely to affect a child’s development. Each one has an expected window for integration. When that window passes and the reflex is still active, it begins to interfere with age-appropriate skills.
- Moro Reflex (Startle Reflex) — Present from birth, should integrate by 2 to 4 months. When retained, children may be hypersensitive to light, sound, and touch, have trouble regulating emotions, experience anxiety, and struggle with transitions or unexpected changes.
- ATNR (Asymmetrical Tonic Neck Reflex) — Should integrate by 4 to 6 months. When retained, children may have difficulty crossing the midline of the body, leading to handwriting problems, challenges with reading (tracking words across a page), and difficulty with tasks that require both hands working together.
- STNR (Symmetrical Tonic Neck Reflex) — Should integrate by 9 to 11 months. When retained, children often have poor posture, difficulty sitting still at a desk, may prop their head on their hands while reading, or “W-sit” on the floor. This reflex is heavily connected to the ability to sustain focus for schoolwork.
- Spinal Galant Reflex — Should integrate by 3 to 9 months. When retained, children may be highly sensitive to waistbands or tight clothing, have difficulty sitting still (the sensation of a chair back touching the spine can trigger the reflex), and may struggle with bladder control and bedwetting.
- TLR (Tonic Labyrinthine Reflex) — Should integrate by 3.5 years. When retained, children may have poor muscle tone, difficulty with balance and spatial awareness, tendency to walk on tiptoes, and motion sickness. It also affects the ability to judge distance and organize visual information.
Signs Your Child May Have Retained Primitive Reflexes
Retained primitive reflexes rarely show up as a single obvious sign. More often, parents notice a cluster of struggles that do not quite fit together — and that do not fully resolve with traditional approaches. Here are the most common signs to watch for across different areas of development:
- Difficulty sitting still in a chair, especially at school
- Poor handwriting or pencil grip that does not improve with practice
- Trouble reading — skipping words, losing their place, or poor reading comprehension
- Clumsiness, poor balance, or frequent falls beyond the typical toddler stage
- Emotional dysregulation — big meltdowns, extreme sensitivity to sensory input
- Sensitivity to clothing textures, tags, waistbands, or seams
- Difficulty with tasks that cross the body’s midline (tying shoes, catching a ball)
- W-sitting (sitting with legs bent out to the sides in a “W” shape)
- Tiptoe walking beyond age 2 to 3
- Anxiety, hypervigilance, or a persistent sense of being “on edge”
- Bedwetting past the typical age of bladder control
- ADHD-like symptoms: inattention, impulsivity, difficulty following multi-step directions
How the Nervous System Drives Primitive Reflex Integration
To understand why primitive reflexes sometimes fail to integrate, we need to look at the nervous system — specifically the brainstem and cerebellum. These two structures play a central role in coordinating movement, processing sensory input, and guiding the developmental progression from primitive, automatic responses toward more refined, voluntary control.
The cerebellum, sometimes called the “little brain,” is responsible for coordinating movement, balance, and timing. It receives an enormous amount of input from the spine and muscles through a process called proprioception — the body’s ability to sense where it is in space. When proprioceptive input is accurate and consistent, the cerebellum can do its job: it helps orchestrate the gradual handoff from primitive reflex activity to higher-level motor and cognitive control. When that input is disrupted, the cerebellum does not get the information it needs to facilitate normal developmental progression.
This is where spinal health becomes directly relevant to neurological development. Subluxations — areas of tension, misalignment, or restricted motion in the spine — interfere with the quality of proprioceptive signals traveling from the spine and joints up through the brainstem and cerebellum. A spine that is not moving freely and symmetrically sends a distorted sensory map to the brain. This means the nervous system is working from flawed input, which compromises its ability to integrate those early reflexes on schedule.
It is important to understand that this is not about bone-on-nerve compression in the way many people picture it. The issue is about signal quality — about the richness and accuracy of the proprioceptive feedback loop that the developing nervous system depends on. When the spine moves well, the brain gets clear input. When there is interference, the brain has to work harder and less efficiently, and developmental milestones — including reflex integration — can fall behind.
Wondering if retained reflexes are affecting your child’s development?
Call Dr. Cody at (754) 203-5907 or book a neurological assessment online.
How Neurologically-Focused Chiropractic Supports Reflex Integration
Neurologically-focused chiropractic care takes a different approach than traditional musculoskeletal chiropractic. Rather than focusing primarily on pain relief, the goal is to identify and correct the areas of the spine where nervous system interference is occurring — and to restore the quality of proprioceptive input that the developing brain depends on. For children with retained primitive reflexes, this can be a genuinely transformative intervention.
At Alive and Free Chiro, Dr. Cody uses gentle, specific chiropractic adjustments tailored to each child’s age and nervous system needs. Pediatric adjustments use very light pressure — nothing like what you might imagine when you think of adult chiropractic care. The goal is not to force movement but to introduce precise neurological input at key spinal segments that influence the brainstem and cerebellar pathways involved in reflex integration. When the spine is moving freely and symmetrically, the cerebellum receives the input it needs to begin organizing more mature movement patterns.
Chiropractic care works best for retained reflexes when it is combined with targeted movement exercises — also called reflex integration exercises. These are specific movement patterns designed to mimic and reinforce the developmental sequences that the child’s nervous system missed earlier. Dr. Cody often provides families with simple at-home movement routines to complement the neurological work being done in the office. This combination of spinal correction and movement input gives the nervous system the best possible environment for catching up on the integration it missed.
Parents often describe the changes they notice after consistent neurologically-focused chiropractic care as gradual but meaningful. Children who were always “wired and tired” begin to regulate more easily. Kids who struggled to sit through a meal or a homework session start to sustain attention longer. Handwriting improves. Emotional meltdowns become less frequent. These changes do not happen overnight — the nervous system needs consistent input over time — but they reflect a genuine shift in how the child’s brain is processing and organizing information.
It is also worth noting that neurologically-focused chiropractic care is not a replacement for other therapies — it is often a powerful complement to them. Many families find that OT, speech therapy, and vision therapy become significantly more effective once the nervous system’s foundational organization is addressed through chiropractic. When the brain is less stressed and more organized, a child is better able to integrate the work being done in other therapeutic settings.
Frequently Asked Questions About Retained Primitive Reflexes
How do I know if my child has retained primitive reflexes?
There is no single test that parents can do at home, but a cluster of signs across multiple areas — difficulty sitting still, poor handwriting, emotional oversensitivity, clumsiness, reading struggles, and sensory issues — is a strong indicator worth investigating. A neurologically-focused chiropractor can perform a functional assessment that screens for retained reflex activity by observing specific movement patterns and postural responses. This kind of evaluation looks at how the body moves and responds to certain inputs in ways that reveal whether primitive reflex patterns are still active.
Can retained reflexes integrate on their own without intervention?
In some cases, given the right movement-rich environment, children’s reflexes can continue to integrate well into childhood — but this is less likely the longer they remain active without support. Children who spend a lot of time in structured, sedentary settings (screens, high chairs, car seats) may not get the varied movement input that drives integration naturally. The good news is that the nervous system retains plasticity throughout childhood and even into adolescence, meaning that targeted intervention — whether through chiropractic, movement exercises, or therapy — can support integration at any age.
How does chiropractic care help with retained primitive reflexes?
Neurologically-focused chiropractic care addresses the proprioceptive input that the cerebellum and brainstem need to facilitate reflex integration. When subluxations in the spine interfere with the quality of sensory signals reaching the brain, the nervous system struggles to complete the developmental sequencing that allows primitive reflexes to become integrated. By restoring proper spinal motion and neurological communication, chiropractic care creates the conditions the brain needs to reorganize and move forward developmentally. It is often most effective when combined with specific movement exercises that reinforce the integration process.
At what age is it too late to address retained primitive reflexes?
It is never truly too late. While the nervous system is most plastic in early childhood — making the first 8 to 10 years the highest-leverage window — retained reflexes can be identified and addressed in teenagers and even adults. Many adults who struggled with learning differences, coordination issues, or chronic anxiety in childhood find significant relief when retained reflexes are identified and addressed later in life. That said, earlier intervention is generally more effective and requires fewer resources, which is why it is worth assessing children as young as possible if developmental concerns arise.
What other therapies work well alongside chiropractic for reflex integration?
Chiropractic care pairs especially well with occupational therapy (OT), which can directly address sensory processing and provide structured reflex integration exercises. Vision therapy is another powerful complement, particularly for children whose retained ATNR or STNR is contributing to reading and tracking difficulties. Speech therapy benefits from improved neurological organization as well. Some families also explore Brain Balance, the Masgutova Neurosensorimotor Reflex Integration (MNRI) method, or primitive reflex integration programs designed specifically for this purpose. The key is that all of these therapies work better when the nervous system’s foundational organization is addressed first.
It’s Not Too Late to Help Your Child’s Nervous System
If you have been searching for answers about why your child is struggling — and conventional approaches have not given you the full picture — retained primitive reflexes may be worth exploring. The signs are often subtle enough that they get attributed to personality, attention deficit, or immaturity. But for many children, the root cause is neurological, not behavioral, and it responds well to the right kind of support.
Dr. Cody and the team at Alive and Free Chiro are here to help you understand what is happening in your child’s nervous system and to create a plan that supports their development from the ground up. You do not have to keep guessing. With the right assessment and consistent care, many children make meaningful progress — and families finally get the answers they have been looking for.
Ready to find out if retained reflexes are holding your child back?
Call Dr. Cody at (754) 203-5907 or book a neurological assessment online.