Your toddler was babbling, pointing, waving bye-bye, maybe even stringing a few words together. Then, over a few weeks or a few months, it slowed down and stopped. The eye contact got shorter. The words that were there faded. Your child started to feel further away, not closer, and no one seems to have a straight answer for why.
This pattern, a child who meets early milestones and then loses skills they already had, is called regressive autism. It is different from a child who shows differences from the very start, and it tends to catch parents off guard in a specific way, because you saw the skills yourselves. You know they were there.
What Regression Actually Looks Like
Regression usually shows up between 15 and 30 months, often around the middle of that window. Some estimates suggest it plays a role in a large share of autism diagnoses, not a small one. What parents describe tends to follow a pattern: words that disappear, less interest in playing with others, less response to their own name, and new repetitive movements or intense sensory interests that were not there before.
Alongside the loss of language and social connection, many parents also notice changes that look unrelated at first:
- New sleep disruptions or a child who suddenly resists settling at night
- Digestive changes, including new constipation or a shift in eating habits
- Increased sensitivity to sound, touch, or light
- Repetitive movements like hand flapping or spinning that show up for the first time
Seeing these show up together, rather than as separate problems, is often the first clue that something bigger than a single skill is involved.
A Nervous System View of What Happened
The skills your toddler lost, language, eye contact, social play, all depend on a nervous system that can register the world, filter it, and respond calmly. When that system is carrying too much stress, it starts protecting itself instead of continuing to build new skills, and that protective shift is what regression often looks like from the outside.
That stress rarely comes from one single event. More often it builds from a combination of things across pregnancy, birth, and the first year or two of life: a stressful pregnancy, a birth that involved induction, vacuum extraction, forceps, or a C-section, repeated illnesses, or a course of antibiotics. None of these alone causes regression. Layered on top of each other, though, they can be more than a young nervous system can absorb while it is also trying to keep building new skills.
Think of your child's nervous system as having a gas pedal and a brake. When stress accumulates, the gas pedal can get stuck down. A nervous system stuck in that state has less capacity left over for language, connection, and the flexible attention that social play requires, and skills that were already fragile can start slipping instead of solidifying.
Where the Upper Neck Fits In
The birth process, even in what looks like a completely ordinary delivery, puts real physical stress on a newborn's upper neck and brainstem. That area carries the vagus nerve, the main line of communication between the brain and digestion, immune response, and the calming half of the nervous system. Tension held in the upper neck can quietly interfere with that signal for months before any developmental changes become obvious to a pediatrician doing a routine checkup.
This is part of why colic, reflux, and sensory sensitivity in infancy sometimes show up again later as language loss or social withdrawal. It is not a different problem appearing out of nowhere. It is often the same nervous system pattern, showing up differently as your child grows and the demands on that system increase.
What Care Looks Like For Your Child
We start with your child's full story: pregnancy, birth, early illnesses, and exactly when and how the regression showed up. From there, a gentle exam and INSiGHT neurological scanning, thermal, heart rate variability, and sEMG, gives us real data on how your child's nervous system is regulating instead of guessing from behavior alone.
Using Koren Specific Technique and Talsky Tonal Chiropractic, our doctors work with light, nervous system focused contacts, no cracking, popping, or twisting, at whatever pace your child can tolerate. Many children who have become sensitive to touch still settle well into this kind of care because of how gentle it is.
What Parents Often Notice
Families often describe better sleep first, along with steadier digestion and fewer meltdowns tied to sensory overwhelm. Eye contact and responsiveness to their name sometimes return gradually rather than all at once, and some parents notice their child seeking out play again after months of turning inward. Some families notice small shifts within the first several visits, while for others the pattern took longer to build and takes longer to unwind. Our doctors track your child's response with repeat scanning so the plan can adjust as things change, rather than sticking to one approach regardless of how your child is responding.
Supporting Your Child Between Visits
- Keep a simple log of sleep, meals, and mood, patterns matter more than any single hard day
- Protect a predictable daily rhythm, a nervous system under stress relies on routine more than most
- Offer calm, low input time each day without screens, even just fifteen minutes
- Notice and note any new sensory interests or aversions to bring to your next visit
If your toddler has lost words or connection they once had, our doctors in Royal Oak would welcome the chance to look at what their nervous system is carrying. You can read more about how we support autism and neurodevelopmental differences, or get our free guide on the nervous system side of these changes. When you are ready, you can book online, or call us at (248) 616-0900.
