When irritability is a cry for help: understanding the mood of neurodivergent children

The child enters the room, apparently calm.

A short time later, someone speaks loudly next to you.

The teacher unexpectedly changes the sequence of the activity.

A colleague insists on touching her.

She can't finish a task.

Someone says: “You don’t have to be nervous about it.”

Minutes later, the child responds harshly, cries, screams or simply shuts down.

Then the hasty interpretation arises:

• “She is very irritable.”
• “Everything becomes a problem.”
• “You don’t know how to listen.”
• “You have to learn that the world will not adapt to it.”

Perhaps. But there is another possibility that deserves to be investigated: irritability may be the visible moment of a process that began much earlier.

Irritability is not a diagnosis

Irritability is a human experience.

Typical or neurodivergent children can become irritable when they are tired, frustrated, anxious, in pain, overwhelmed or faced with situations they cannot resolve.

In some neurodevelopmental conditions, however, difficulties with emotional regulation may appear with greater frequency or intensity.

In ADHD, for example, research indicates an important association between symptoms of the disorder and difficulties in emotional regulation, although irritability is neither exclusive to ADHD nor sufficient to characterize it (BUNFORD et al., 2015). As we discussed in our article about ADHD, behavior and limits, support in the organization of routines and the empathetic establishment of limits are pillars in behavioral regulation.

In autism, factors such as anxiety, sensory changes, communicative difficulties and the need for predictability can also contribute to behaviors that are externally perceived as irritability. As we highlighted in the analysis of the signs of autism in childhood, early mapping of sensory profiles prevents extreme overloads.

A review by Leibenluft and colleagues (2024) highlights that irritability occurs in different conditions of childhood and adolescence, including ADHD and autism spectrum disorder. Therefore, it must be understood in a transdiagnostic and contextualized way.

Therefore, it is important to avoid a phrase like:

“Neurodivergent kids are angry.”

A more appropriate formulation would be:

“Some neurodivergent children may have greater difficulty regulating in the face of certain demands and contexts.”

The difference is big. The first transforms behavior into identity. The second allows investigation.

Maybe irritability starts before it appears

Imagine that an autistic child enters an environment with simultaneous conversations, chairs moving, bright light and people constantly approaching.

Perhaps no stimulus alone is enough to provoke a reaction.

But they accumulate.

Then comes an unexpected change in routine. Then someone demands a quick response — a situation directly related to the processing speed in learning and time pressure. Finally, a person touches your arm without warning.

The reaction happens at that last moment.

Anyone who only watches the final five seconds can conclude: “She exploded because they touched her.” But perhaps the touch was just the last element of an overload sequence.

Studies with autistic children show relationships between sensory hypersensitivity and anxiety. Green and collaborators (2010), for example, found an association between anxiety and sensory hyperresponsiveness in children on the autism spectrum. In another longitudinal study with 149 young autistic children followed at two moments, anxiety and sensory hyperresponsivity also showed relationships throughout development (GREEN et al., 2012).

Therefore, when faced with an intense reaction, the clinical or educational question should not just start with the final behavior. We need to rebuild the path.

When the environment requires adaptation all the time

There is something curious about social relationships. We often ask the neurodivergent child:

• “Control yourself.”
• "Don't do that."
• “Look at me when I’m talking.”
• “Stop moving your hands.”
• “Stay seated.”
• “Don’t complain about the noise.”
• “You need to participate.”
• “Don’t take everything literally.”
• “Don’t be upset about it.”

Individually, some of these guidelines may even have an educational function. The problem arises when almost every interaction requires only one party to adapt.

The child needs to tolerate the sound. The child needs to tolerate the approach. The child needs to understand irony. The child needs to change their way of communicating. The child needs to hide discomfort. The child needs to keep pace.

And what about adults? How willing are they to understand the way that child experiences the environment?

Inclusion should not mean placing a different child into an inflexible environment and teaching them just to put up with it.

Behavior can also be communication

A child cannot always say:

• “I’m overwhelmed.”
• “That noise is bothering me.”
• “I don’t understand what you want.”
• “I’m scared of making a mistake.”
• “I need a few minutes.”
• “This change made me insecure.”
• “I’m tired of trying to keep up.”

Sometimes these experiences first appear through behavior: crying, irritation, refusal, silence, agitation, withdrawal, or harsh responses.

As we pointed out when differentiating indiscipline and overload in the article about ODD and childhood stubbornness, confusing emotional exhaustion with the intention to challenge harms the intervention. This does not mean that all behavior should be accepted without intervention. A child continues to need to learn appropriate ways to communicate frustrations and socialize.

But there is an essential difference between teach a better way to express discomfort and punish discomfort without understanding its origin.

“But she needs to learn to live in the real world”

This phrase often appears when talking about adaptations for neurodivergent children.

There is a true part of it: no person will live in a perfectly controlled environment. We all need to develop tolerance, flexibility, social skills and strategies for dealing with uncomfortable situations.

But there is a problem with this logic when taken to the extreme: To learn to tolerate challenges, a child must first be able to remain regulated enough to learn.

Exposure is not synonymous with learning. Repeatedly placing someone in front of a situation that exceeds their ability to regulate can produce suffering, anxiety, avoidance and increased reactions — a process similar to that described in our article on the child who erases and redoes everything faced with the fear of making mistakes.

The goal of good support shouldn't be to eliminate all challenges. It should be about finding the point between accepting real needs and progressively developing greater autonomy.

The weight of social barriers

Sometimes, the biggest difficulty is not neurodivergence. It is at the intersection between neurodivergence and an environment little prepared for it.

A child who has difficulty understanding certain social rules may be excluded by their peers. Another might be called “strange.” A child who needs predictability may be ridiculed because he “makes a drama when something changes”. Another may be constantly told that their sensitivity is exaggerated.

When these experiences are repeated, we are no longer just talking about an individual characteristic. We are talking about social barriers. And barriers produce emotional consequences.

The World Health Organization highlights that the capabilities and needs of autistic people are diverse and can change over time, while adequate support is essential for participation and quality of life (WHO, 2025).

This changes the question. Instead of just asking: “What’s wrong with this child?”, we can also ask: “What about this environment is making it difficult for you to participate?”

Lack of family support can also increase suffering

No family is born knowing how to deal with all the demands of a neurodivergent child.

Parents get tired too. They are afraid. They make mistakes. They feel guilt. They don't always agree with each other. Some face financial difficulties or lack of specialized services. Others live with family members who minimize the diagnosis: “In my time this didn’t exist”, “It’s a lack of limits”, “He does it because you let him”.

The problem, therefore, should not be reduced to the idea of ​​an “unsupportive family”. Often, there is a family that is also without support.

Research with families of autistic children has shown a relationship between social support and better indicators of coping and family well-being. Studies also record high levels of stress among many caregivers and difficulties in accessing services, especially in low-resource contexts.

Therefore, supporting the child often also means supporting those who care for them.

What about when there is a lack of professional support?

Diagnosis alone does not teach anyone how to deal with concrete situations. Knowing that the child is autistic or has ADHD explains part of their trajectory, but the practical question soon arises: “What now?”

Family and school need to understand how that specific child works: what situations precede their crises? How do you communicate discomfort? How do you react to changes? Which stimuli are particularly difficult? How is your sleep? Are there language difficulties? What resources help with self-regulation? When does it work well?

As we discussed in our study on executive functions and difficulty initiating tasks, mapping these factors in advance significantly changes the effectiveness of interventions.

NICE guidelines (2021) recommend that autistic children and young people who develop challenging behaviors are assessed considering possible triggers, including physical, emotional and environmental factors, in addition to receiving coordinated support between different areas when necessary.

This principle is fundamental: Before trying to erase behavior, we need to understand its function and context.

Lack of empathy can become another factor of dysregulation

Sometimes the child is already trying to deal with the discomfort. Then listen: “This is nothing”, “For freshness”, “Everyone can do it”, “Only you complain”, “You need to stop this”.

There is a difference between not agreeing with a reaction and invalidating the experience that produced it. If a child experiences a certain sound as extremely unpleasant, saying that “it’s not that loud” does not change their sensory experience. If an unexpected change produces anxiety, explaining that “nothing big happened” doesn’t eliminate that anxiety either.

Empathy does not mean agreeing with every answer. It means recognizing: “For you, this really was difficult.” Then we can teach: “Now let’s figure out a better way to deal with this.”

This combination—recognition plus guidance—is often much more educational than humiliation or confrontation.

Respect does not mean absence of limits

Perhaps it is worth making this very clear: an affirmative approach to neurodiversity does not mean allowing aggression, disrespect or any behavior under the justification that the child is neurodivergent. Limits remain necessary. What changes is the way of establishing them.

We can say: "I noticed you got really angry. You can get angry. But you can't hurt someone."

Here there are two simultaneous messages: the emotion is accepted; behavior has limits.

We can then add: “Let’s find out what happened and think about what you can do next time.” This type of intervention teaches self-regulation. Punishing without investigation may stop the behavior in that moment, but it may not teach what to do when the same emotion returns.

Before fixing, investigate

When episodes of irritability recur, families and schools may begin to notice patterns: what usually happens immediately before? Is there noise? Change of routine? Academic demand? Frustration? Social interaction? Hunger or tired? An instruction that is difficult to understand? Excessive activities? Does the behavior occur in all environments? Does it happen more after certain periods? What usually helps a child recover?

As we demonstrated in the article Diagnosis is not a guess: the importance of scientific psychopedagogical assessment, recording this information reveals patterns that informal everyday observation cannot capture. Perhaps what seemed like “irritability for no reason” has a very consistent logic.

Some children spend the whole day trying to adapt

There is also a particularly important situation: the child remains apparently calm at school. Follow all the rules. Don't complain. Does not show discomfort. He comes home and explodes.

For those who only observe the family environment, it seems contradictory: "At school she behaves. Here she becomes another child."

A frequent explanation is that part of the adaptation effort has been sustained for hours and, in an environment perceived as safe, the ability to continue controlling everything decreases.

This should not be used as an automatic explanation for any behavior, but it deserves to be included in the investigation. Sometimes the relevant question is not “why does she only do this to me?”, and yes: “How much effort did she have to make during the day to get here?”

The child should not need to suffer to prove that they need support

There is something perverse that can happen in some contexts: as long as the child can bear it, no one changes anything. When it finally comes to a crisis, everyone recognizes that there is a problem. In other words: she needs to reach the limit for her needs to be taken seriously.

Good support should work just the opposite: observe beforehand, anticipate, adapt when necessary, teach strategies and build autonomy, gradually increasing the ability to deal with situations without waiting for suffering to reach its peak.

Maybe we should change the question

When a neurodivergent child demonstrates frequent irritability, it is natural for adults to want to modify the behavior. But perhaps the first question shouldn't be: “How do I make her stop this?”

We can start with another:

“What is this behavior trying to show us?”

Maybe it's frustration, sensory overload, anxiety, tiredness, difficulty communicating, excessive demands, lack of predictability or issues that we still don't understand.

Not all irritability has a simple explanation. But one thing is certain: **understanding does not mean putting your hand over your head. Understanding means obtaining enough information to intervene better.**

A neurodivergent child will continue to need to learn limits, flexibility, coexistence and self-regulation strategies. But perhaps adults also need to learn something: respect, adaptation, listening and empathy are not privileges granted to children. They are part of the environment she needs to be able to learn to live in it.

And sometimes, what we call “bad mood” is just the part that we can see of a much greater difficulty.

References

BUNFORD, N. et al. ADHD and Emotion Dysregulation Among Children and Adolescents: A Meta-Analysis. Journal of Abnormal Child Psychology, v. 43, no. 2, p. 185–217, 2015. DOI: 10.1007/s10802-014-9910-8.

GREEN, S. A. et al. Anxiety disorders and sensory over-responsivity in children with autism spectrum disorders. Journal of Autism and Developmental Disorders, v. 40, n. 12, p. 1495–1504, 2010. DOI: 10.1007/s10803-010-1007-x.

GREEN, S. A. et al. Anxiety and sensory over-responsivity in toddlers with autism spectrum disorders: bidirectional effects across time. Journal of Child Psychology and Psychiatry, v. 53, no. 11, p. 1149–1157, 2012. DOI: 10.1111/j.1469-7610.2012.02592.x.

LEIBENLUFT, E. et al. Irritability in Youths: A Critical Integrative Review. Annual Review of Clinical Psychology, v. 20, p. 111–137, 2024. DOI: 10.1146/annurev-clinpsy-081122-014050.

NATIONAL INSTITUTE FOR HEALTH AND CARE EXCELLENCE – NICE. Autism spectrum disorder in under 19s: support and management. Clinical Guideline [NG193]. London: NICE, 2021. Available at: https://www.nice.org.uk/guidance/ng193.

WORLD HEALTH ORGANIZATION – WHO. Autism. Fact sheet. Geneva: WHO, 2025. Available at: https://www.who.int/news-room/fact-sheets/detail/autism-spectrum-disorders.