Catatonia in Autism: Sudden Behavior Changes Explained

If you’ve ever watched your profoundly autistic son or daughter suddenly start pulling their pants down at the day program or get so aggressive that the staff quietly pulls you aside and says “we need to talk,” you know the panic I’m talking about. You waited years for that waiting list spot. You finally got the placement. And now you’re terrified it’s about to fall apart because your kid’s behavior changed and nobody can tell you why. I’ve been that parent. My son Michael is 36 and profoundly autistic, and this week I want to talk about something most of us have never heard of but that might explain a change in behavior that’s putting a placement at risk: catatonia in autism.

Key Points

Catatonia in autism is a treatable condition that can look like “sudden bad behavior” staring, freezing, aggression or incontinence and it’s often mistaken for a behavior problem instead of a medical one.
The biggest clue isn’t any single symptom. It’s a change from your kid’s normal baseline.
Catatonia symptoms fall into two buckets: hypokinetic (slowing down, freezing and going quiet) and hyperkinetic (repetitive movement, self-injury and aggression).
You don’t need a diagnosis to start the conversation. Video the behavior, bring it to your doctor, and ask if it’s worth a look.

Why is my autistic adult suddenly more aggressive or “acting out”?

Concerned parent comforting withdrawn teenage boy sitting on bed in bedroom, emotional support moment

Here’s the thing nobody tells you when your kid is first diagnosed: a sudden, dramatic shift in behavior, more aggression, pulling clothes off, way more noise, way less noise, whatever it is, isn’t always “just autism being autism.” Sometimes it’s a sign of something layered on top of autism. Catatonia is one of those things. It’s a real, medically recognized condition that affects movement, speech, behavior and even automatic body functions like breathing, heart rate and temperature regulation. The Autism Science Foundation put out a two-page rundown on it and the National Council for Severe Autism republished it because it matters that much to families like ours.

The reason I’m bringing this up isn’t to scare you into thinking your kid has “one more thing.” I get it; we’re all already managing epilepsy, GI issues, anxiety meds, sensory stuff. I don’t want to hand you another diagnosis to lose sleep over. But if your son or daughter has had a real, noticeable shift not their normal, but a change from their normal, it’s worth at least knowing what to look for.

What are the hypokinetic signs of catatonia in autism?

Infographic listing hypokinetic autism catatonia symptoms like freezing, mutism, slow movement, and withdrawal

Hypokinetic just means “slowed down.” These are the signs where your kid pulls inward instead of acting out:

Staring or a fixed gaze – not just zoning out for a second, but really locking on and going non-responsive. Michael does this at dinner sometimes, staring at his plate for 10-15 seconds. We used to chalk it up to micro-seizures because he has epilepsy, but reading this list made me second-guess that assumption.
Trouble crossing thresholds – standing in a doorway, completely stuck, going back and forth and back and forth, unable to decide whether to go in or out. Michael does this most nights before heading down the hall to play his Wii.
Reduced speech or communication – if your nonverbal kid normally uses their iPad or their icons and they suddenly stop, that’s worth paying attention to.
Freezing or moving very slowly – a real drop in pace that isn’t explained by a bad night’s sleep.
Loss of self-care skills – if dressing themselves, which they could always mostly do, suddenly becomes something they can’t do at all, even with help.
New or worsening incontinence – a sudden change from their normal bathroom independence.

What are the hyperkinetic signs and why do they get kids kicked out of programs?

Infographic listing hyperkinetic symptoms including repetitive movements, agitation, aggression, and incontinence.

This is the side that actually tends to get kids removed from placements, because it looks like “aggression” or “a behavior problem” to staff who don’t know what catatonia looks like.

Echolalia or echopraxia – echoing other people’s words or movements. Michael does this occasionally, but not enough to worry me.
New or much more intense repetitive movement – we finally got Michael to mostly stop hand-flapping. If that kind of repetitive behavior suddenly ramps back up out of nowhere, it’s a flag.
Strange body posture – holding the head at a weird angle, walking differently, something you’ve genuinely never seen before.
Self-injury – biting their wrist hard enough to draw blood, head-hitting. This is the one that scares programs and schools the most and it’s exactly the kind of thing that gets a family told “we can’t serve your child here anymore.”

What can you do if you think it’s catatonia?

You don’t need to walk into your doctor’s office with a diagnosis. You just need documentation and a question.

Pull out your phone. Get video of the behavior over a couple of days. The staring, the freezing, the repetitive movement, whatever it is.
Bring it to your physician and say something like: “This is different from my child’s baseline. I read about catatonia in autism. Is this worth looking into?”
Ask about medication if it’s recommended. Lorazepam, an anti-anxiety medication, has a track record of helping with catatonia symptoms. None of us want to add another drug to the list, but if the behavior is severe enough to threaten a placement, it’s a conversation worth having.
Lower the stress load at home. Less prompting, less insistence, fewer demands. Treat it the way you’d treat any bad day. Pull the harder tasks off the table and lean into routine, structure and things that are familiar and slow.

I’m not a doctor. I’m not diagnosing your kid or mine. I’m a dad who read a two-page PDF and thought, “wait, some of this sounds familiar,” and figured you might want to know it exists too.

What You’ll Learn

What catatonia in autism actually is, in plain language
Why “baseline change” matters more than any single symptom
The difference between hypokinetic (slowed-down) and hyperkinetic (agitated) catatonia signs
Real examples from raising a profoundly autistic 36-year-old son
What to actually do video, doctor visit, the right question to ask
Why lorazepam comes up in catatonia conversations
How to lower stress at home while you sort it out

Notable Quotes

“This is a little different… if there’s certain things that have happened all of a sudden that aren’t normal, it might be worth a look at.” -Mike Carr (00:05)
“The problem with him is sort of his baseline behavior. So what we’re looking for here are things that have dramatically changed recently.” -Mike Carr (02:13)
“All these things fall into what’s called the hypokinetic space… next to that, you can see something called the hyperkinetic space.” -Mike Carr (03:39)
“This is where you really don’t want these kinds of behaviors to continue.” -Mike Carr (05:01)
“None of us want to put our kids on drugs… but lorazepam is actually an anti-anxiety medication and it’s something that catatonia has known to be effective.” -Mike Carr (05:48)
“I’m not saying this is what’s going on. I’m not a medical expert. I’m not a doctor.” -Mike Carr (06:26)

Resources & Links

Autism Science Foundation – published the original two-page PDF on catatonia in autism that this episode is based on; check their site for the downloadable guide.
National Council for Severe Autism (NCSA) – republished the catatonia guide and focuses specifically on issues facing profoundly autistic individuals and their families.
Your child’s primary care physician or neurologist – the right first call if you suspect catatonia; bring video documentation of the behavior change.
Lorazepam (benzodiazepine class) – a medication with documented effectiveness for catatonia symptoms; a conversation to have with a doctor, not something to start on your own.

Timestamped Outline

00:05 Introduction: keeping your profoundly autistic child from getting kicked out of a program
00:48 Why this topic matters even when you’re already managing other conditions
01:26 Definition of catatonia, sourced from the Autism Science Foundation
02:13 Hypokinetic symptoms: staring, threshold freezing, reduced communication
03:39 The hypokinetic vs. hyperkinetic symptom categories explained
04:17 Hyperkinetic symptoms: repetitive movement, posture changes, self-injury
05:01 Why hyperkinetic symptoms are the ones that get kids removed from programs
05:48 What to do: video documentation, doctor visits and lorazepam
06:26 Reducing environmental stress and lowering expectations on hard days
06:26 (close) Final thoughts and disclaimer

FAQ

What is catatonia in autism?

In this episode, Mike Carr reads the Autism Science Foundation’s definition: catatonia is “a serious but treatable condition that affects movement, speech, behavior, and automatic functioning,” such as breathing, heart rate, or temperature regulation. Mike says it isn’t all that common, but common enough to look at when your son or daughter’s behavior suddenly changes.

Source: Sudden Autism Behavior Changes? It Might Be Catatonia https://www.podpage.com/autism-labs-1/sudden-autism-behavior-changes-it-might-be-catatonia/
From the Autism Labs podcast. This is one parent’s or guest’s experience or recommendations and should never be interpreted as medical, legal, or financial advice.
Topic: Medical & health

What are the signs of catatonia in my autistic son or daughter?

In this episode, Mike Carr walks through the Autism Science Foundation’s list. Slowed-down signs include staring, trouble crossing doorways, less communication, freezing or moving very slowly, losing self-care skills, and new or worsening incontinence. Other signs include echoing words or movements, more repetitive movements, unusual posture, and self-injury. Mike stresses that what matters is a sudden change from your child’s baseline.

What should I do if I think my autistic child has catatonia?

In this episode, Mike Carr says the Autism Science Foundation suggests taking video of the behavior over a day or a few days and showing it to your physician. Mike says lorazepam, an anti-anxiety medication, has been known to be effective for catatonia; his family hasn’t tried it, and it’s a question for your physician. He also describes lowering stress with less prompting and familiar, structured activities.

Why is my autistic young adult suddenly acting out at their new program?

In this episode, Mike Carr says a sudden change, such as more aggression, self-injury, or new behaviors, can put a day program, respite, or residential spot at risk. He says catatonia is one thing to look at: not all that common, but common enough to check. Mike’s focus is on what has changed recently compared with your son or daughter’s usual behavior.

Transcription

Mike Carr (00:05): Well, welcome back to another episode of Autism Labs and I want to talk today about how to keep your kid, your son or daughter who’s profoundly autistic from getting kicked out. You’ve been on that waiting list for a long time, and you finally get into the program, whether it’s a day program, respite, or even residential. And then there’s a big change in your child, your adult, young adult, or older teen maybe a lot more aggression, or they start pulling their pants down, or there’s too much noise, or whatever, but it’s just a change in their behavior. One of the things to look at, which isn’t all that common but is common enough to consider, is called catatonia. Now you’re thinking, “Oh my gosh, all I need is another chronic condition to look at.”

Mike Carr (00:48): I’ve been down this road so many times already, and I get it. As a parent of a 36-year-old profoundly autistic child, we’ve been there, done that. But this is a little different, and what makes it different is: if there’s a sudden change in behavior certain things that have happened all of a sudden that aren’t normal it might be worth a look. I’m going to put the definition of catatonia on the screen and read it to you.

Mike Carr (01:26): This is from the Autism Science Foundation, which published a two-page PDF on the topic, and the National Council for Severe Autism republished it yesterday. That’s why I wanted to talk about it today. I’ll link the PDF in the show notes. So what is catatonia? It’s a serious but treatable condition that affects movement, speech, behavior, and automatic functioning things like breathing, heart rate, or temperature regulation. It’s often linked to mental health disorders and, relevantly, to autism.

Mike Carr (02:13): Here’s the key: some of these symptoms may not all show up for your son or daughter, but if a few of them pop up, it’s worth thinking about. Staring or a fixed gaze just staring at something, not moving. At dinner, our son Michael sometimes goes into this state where he stares at his plate for 10 to 15 seconds, completely non-responsive. We thought maybe these were small seizures, since he has epilepsy he has seizures about once a month, but after reading this definition, I’m not so sure anymore. The tricky part with him is this is sort of his baseline behavior, so what we’re really looking for is a dramatic change from that baseline.

Mike Carr (02:52): Trouble crossing thresholds: your son or daughter is standing in a doorway and can’t decide whether to go into one room or another, going back and forth, completely indecisive. Michael does this constantly at night. Last night he sat in the doorway between his room and the hallway where he goes to play his Wii and simply couldn’t make up his mind. I sat with him and talked for a couple of minutes before he finally went one direction.

Mike Carr (03:39): Reduced speech or communication, a significant drop in their ability to communicate, even if they’re nonverbal but normally use an iPad with icons, and suddenly they stop. Or movement freezing or moving very slowly if they normally move at a normal or even accelerated pace and suddenly slow way down. Maybe it’s lack of sleep, but maybe it’s something else. Loss of self-care or daily skills Michael dressed himself this morning, though I had to help a little, which is typical. But if he suddenly couldn’t dress himself at all, even with help, that would be a red flag. New or worsening urinary incontinence Michael came upstairs this morning soaked, which is unfortunately his baseline. But if this starts happening suddenly for your kid, and it wasn’t the case before, it’s probably worth a look. All of these fall into what’s called the “hypokinetic” space, you’ll see that on the PDF. Next to it is the “hyperkinetic” space, a different class of symptoms that can also indicate catatonia.

Mike Carr (04:17): Echolalia or echopraxia echoing others’ words or movements. Michael does this occasionally, but not often enough to worry about. Much more repetitive movement Michael used to do a lot of hand-flapping, and we finally got him to stop. If that kind of behavior suddenly returns and intensifies, that’s worth noting. Unusual body posture holding the head a strange way, walking differently, something you’ve never seen before. Or self-injury biting hard enough to draw blood, or hitting the head. This is a real problem, and it’s the kind of behavior that can get your child kicked out of school, or at least moved to a different program or job.

Mike Carr (05:01): So what can you do? One suggestion from the Autism Science Foundation: get your phone out and record video when the behavior occurs a few snippets over a couple of days. Bring that to your physician and say, “This is very different from normal for my child. I read a bit about catatonia. Do you think it’s worth trying a medication?”

Mike Carr (05:48): None of us want to medicate our kids further. Many of us already have them on anti-seizure or anti-anxiety medication. But lorazepam, an anti-anxiety medication, has a known track record of effectiveness for catatonia. We haven’t tried it ourselves, and I don’t know if we will, but if the behavior shift is significant from baseline, it might be worth discussing.

Mike Carr (06:26): Another step: reduce environmental stress. Less prompting, less insistence. It’s the same instinct you’d have on any bad day, you lower expectations, push harder tasks to another day. If you’re noticing catatonic symptoms, take the more challenging demands off the table and lean into slower, more structured, familiar activities that won’t add to the anxiety. If you want the PDF, check the show notes, it’s free from the Autism Science Foundation. I want to be clear: I’m not saying this is definitely what’s going on with your child, and I’m not a medical expert or doctor. I can’t give medical advice. But this was interesting to us, and as a parent, it might be worth your time too. Take care of yourself, and please take care of your son or daughter too. Hope you have a wonderful week. See you next week. Bye-bye.