When Autism Looks Like It’s Getting Worse with Age: What’s Really Going On.

Many moons ago, I wrote this memoir style blog post that had the title “it’s just a sh!tty thing to say.” Yes, really, that was the title. If you click that link, I dug it out of the trash and reposted it on the Village. But the vibe is this– yes, raising an autistic baby is much different, and arguably easier, than caring for an autistic adult.

That does not mean we need to constantly remind parents of this. In fact, don’t. It’s not helpful, and it doesn’t make the journey any easier for anyone.

When “Calm” Turns Into Chaos: What’s Really Happening

Lately, this whole concept has been on my mind. A LOT. Because, well, our journey has become increasingly difficult to navigate over just the past 4-6 months. Kevin used to be the quietest, most passive, calm kid you could ever meet. Seriously, I could take him just about anywhere. Now? We can’t take him anywhere

Last week, I tried taking him to an outing at TJ Maxx. All he did was grab people and merchandise. We had to leave.

And I don’t know why. Increased behaviors. I’ve even asked online about autism and sundowning, because it feels that that is a phenomena that we’re seeing here at home.

For us, this is what it looks like.

• Increased sensory seeking behavior
• Increased energy levels
• Huge increase in disruptive, sensory seeking behavior– like grabbing people and things
• Increasingly difficult to redirect
• New behavior- self harm, but it appears to be sensory seeking

That last one– he slaps himself a lot now. And he does this thing where he stands up, and then he literally just lets himself fall to the floor on his knees. Every time it happens, I have to run and see if it was a seizure-related fall. If it’s not, then I have to literally sit there with him until his mind gets on the right path.

He’s incredibly hard to redirect. We have every sensory, stimmy, heavy work, input-providing toy you can imagine. We have a trampoline. We do stretches. We do big hugs and heavy work. Nothing satiates his need, and yes, it’s getting worse.

So, like any special needs parent does these days….. I talked to his doctor, teachers, I talked to friends and searched online.

Does Autism Doesn’t Get Worse with Age?

One of the most common fears parents share is that their child’s autism is “getting worse.” The truth is, autism doesn’t get progressively worse over time. But the world around your child changes, and so does their body. What may look like regression or escalation is often the result of unmet sensory needs, new stressors, or changes in communication and environment.

The nervous system doesn’t stay the same forever. Puberty, growth, and life demands can completely change how a person experiences sound, touch, movement, or pain. For many kids and teens with significant autism, that means what used to regulate them no longer works. The brain starts searching for new ways to cope.

That’s when you might start seeing new or more intense self-stimulatory or self-injurious behaviors, not because autism is worsening, but because your child’s body is trying to find balance again.

Sensory Systems Evolve and Sometimes Overload

For many individuals, sensory thresholds shift dramatically during puberty and adulthood. The brain may start seeking more intense input (crashing, slamming, deep pressure), or rejecting input that used to be tolerable (light, noise, textures).

So when parents ask, “Does autism get worse with age?” the honest answer is no. But the sensory experience of the world can absolutely change. If those new needs aren’t supported with updated sensory tools, routines, or therapy, the body finds its own ways to self-regulate, often in unsafe or alarming ways.

A well-designed sensory plan should grow with your child, just like any other part of their IEP or behavior plan.

Communication and Frustration Build Over Time

Even when a person’s expressive communication hasn’t changed much, their understanding of the world often has. That gap — between comprehension and expression — can create deep frustration.

When someone can’t express pain, boredom, or anxiety, behavior becomes communication. What may look like aggression or self-injury is sometimes the body’s only outlet to release that bottled-up tension.

That’s why it’s so important for teams to continually expand communication supports, whether that’s AAC devices, letterboards, or sensory-based regulation tools. Growth and age bring new emotions, but not always new language to describe them.

Medical and Physical Factors Can’t Be Ignored

Another reason things may appear to “get worse” with age is pain. Adults and teens often have medical issues that go unnoticed, reflux, constipation, headaches, dental pain, hormonal changes, or even side effects from medication.

If a child suddenly starts hitting themselves or slamming their body, always consider medical causes first. Behavior is communication, and pain is one of the most common triggers for new or escalating behaviors in older autistic individuals.

Supports That Don’t Grow with the Child Stop Working

IEPs and behavior plans tend to stay static, especially once a child reaches middle or high school. But the strategies that worked for a 7-year-old are rarely enough for a 17-year-old who’s taller, stronger, and facing adult-level expectations.

When sensory diets, routines, or staffing ratios don’t evolve, you’ll often see an increase in frustration and dysregulation. It’s not that the autism is worsening, it’s that the system around the individual isn’t adapting fast enough.

Ask:

• Has the sensory plan been updated this year?
• Does he have consistent, trained staff who know his regulation cues?
• Has the environment become louder, brighter, or more unpredictable?

Small environmental mismatches add up and they can look like regression when they’re really just overload.

Puberty and Adulthood Bring New Emotional Layers

Hormones, social changes, and physical growth all affect regulation. Many autistic teens experience intense emotions but don’t have the coping strategies or communication skills to manage them.

So when parents wonder, “Does autism get worse as you get older?” what they’re often seeing is adolescence colliding with sensory and communication challenges. With the right mental health and behavioral supports, those intense years can even out again.

Autism Doesn’t Worsen. It Evolves

Autism itself doesn’t get progressively worse. What changes is the person’s sensory system, physical health, emotional world, and environment. When those factors are ignored or unsupported, behaviors can intensify.

It’s not regression. It’s adaptation. It’s communication. And it’s a reminder that supports have to keep growing because your child keeps growing, too.