How to help an autistic person recognize their body’s signals: hunger, thirst, fatigue, and the need to use the restroom
Learn how to help an autistic person recognize their body’s signals—such as hunger, thirst, fatigue, and the need to use the restroom—using practical strategies.
11/3/202612 min read
“I’m not hungry,” “I’m not thirsty”—and then, suddenly, something happens.
Imagine someone who hasn’t had anything to drink for several hours.
You ask if they are thirsty, and they say no.
Later, they begin to show signs of discomfort; their lips become dry, and eventually, they agree to have a drink.
In another scenario, someone might be so focused on an activity that they don’t realize they need to use the restroom until the urge becomes very intense.
It can also happen that someone fails to recognize they are tired, continuing with their activities until they are no longer able to maintain their focus or participate as they did before.
For families, these situations can be difficult to understand.
They might wonder:
“How can they not realize they’re thirsty?”
“Why don’t they say anything when they need to use the restroom?”
“Why do they keep doing things when they’re exhausted?”
One possible explanation relates to interoception—the ability to perceive, interpret, and respond to signals originating from within the body.
Some autistic individuals may experience differences in this process. However, not all autistic people have difficulties with interoception, and research findings in this area vary.
This means we should not assume that a person fails to recognize their own needs simply because they are autistic.
Instead, we need to observe how they identify their internal sensations and discover what kind of support might be helpful for them.
Our goal is not to teach them to follow instructions on when to eat, drink, or rest; rather, it is to help them recognize their own needs and respond to them with greater autonomy.
1. First, understand what interoception is.
We have senses that allow us to perceive what is happening around us.
We see, hear, smell, taste, and feel the touch of objects.
But we also need to be able to recognize what is happening inside us.
For example:
- When the stomach begins to feel empty. - When the mouth is dry.
- When the bladder is full.
- When the body is too hot.
- When fatigue sets in.
- When the heart beats faster.
- When we begin to feel nervous.
Interoception plays a role in recognizing these signals and in how we respond to them.
Imagine this sequence:
SIGNAL: The stomach makes a noise.
RECOGNITION: Identifying that one might be hungry.
RESPONSE: Looking for something to eat.
If any part of this process proves difficult, the person may need help recognizing what they are feeling and deciding what to do.
2. Do not assume you know what they are feeling.
This is one of the mistakes we should avoid.
A person might be restless without actually being hungry.
Someone might say they are tired when, in fact, they are feeling hot.
Another person might decline an activity because they are experiencing physical discomfort that they cannot yet identify.
Do not automatically interpret their gestures or behavior.
Instead of saying:
"You’re hungry."
Try:
"What do you notice in your body?"
You can offer a few possibilities:
"Are you hungry, thirsty, or do you need to rest?"
If they still cannot answer, do not press them.
The goal is to provide opportunities to recognize sensations, not to demand an immediate response.
3. Create a small vocabulary for talking about bodily sensations
Some people find it difficult to explain what they are feeling because they cannot find the right words.
For this reason, it can be helpful to build a personal vocabulary.
Start with everyday sensations:
HUNGRY: I am hungry.
THIRSTY: I am thirsty.
TIRED: I am tired.
HOT: I feel hot.
COLD: I feel cold.
TOILET: I need to go to the bathroom.
REST: I need to rest.
You can use photographs, drawings, pictograms, or flashcards.
You can also introduce expressions such as:
"My stomach feels empty."
"My mouth feels dry."
"My eyes feel tired."
"I need to sit down."
These descriptions can help link a physical experience to a word that allows it to be communicated.
Not everyone needs images. Some people may understand better through words, gestures, or a communication device.
4. Learn to identify how hunger manifests
Hunger is not always recognized in the same way.
One person might notice that their stomach feels empty.
Another might start to feel tired or lose interest in an activity.
Someone else might only realize they are hungry when the feeling has become very intense.
Instead of relying solely on the question "Are you hungry?", you can help the person observe what signs appear before they eat.
For example:
BEFORE EATING:
- Do you notice anything in your stomach?
- Do you feel an urge to eat?
- Are you having trouble staying focused?
- How long has it been since you last ate?
You can discuss these observations without assuming that they all necessarily mean the person is hungry.
A useful activity is to keep a record over a few days of when the need to eat arises and what signs the person themselves identifies.
This can help uncover individual patterns.
Important: Do not use these observations to restrict food intake or to force someone to eat. If you experience significant feeding difficulties, weight loss, or persistent changes in appetite, consult a healthcare professional.
5. Teach them to recognize thirst before they start feeling unwell
For some people, thirst can go unnoticed.
They might not ask for water for several hours, especially when they are focused on an activity.
You can make it easier for them to access drinks and create natural opportunities for hydration.
For example:
UPON WAKING: offer water.
DURING BREAKFAST: ensure a drink is available.
AFTER PLAYING: offer a break to have a drink.
UPON RETURNING FROM OUTDOORS: check if they would like some water.
There is no need to turn this into a rigid obligation or impose a universal amount. Hydration needs depend on factors such as age, activity level, temperature, and overall health.
Having a personal water bottle always within reach can make it easier for the person to drink whenever they need to.
You could also use a visual cue card:
DRINK WATER
The goal is to facilitate access and help the person recognize their own needs, rather than constantly monitoring how much they drink.
6. Work on recognizing the need to use the restroom
This aspect can significantly impact both personal autonomy and daily living.
Some people recognize signals from their bladder well in advance.
Others may only notice them when the urge has already become quite urgent.
It may also happen that someone is so absorbed in an activity that they find it difficult to interrupt it.
To help, observe:
- Whether they tend to use the restroom at specific times.
- Whether they suddenly stop an activity.
- Whether they display movements or gestures that seem to indicate discomfort.
- Whether it takes them a long time to realize they need to go.
- Whether there is any resistance related to the restroom itself or the environment.
You can create opportunities to use the restroom at natural times—such as before leaving the house or before going to bed—provided it is appropriate for the individual.
However, avoid turning trips to the restroom into a constant obligation. If you notice urinary leakage, constipation, pain, discomfort when urinating, or any sudden changes, consult your pediatrician or the appropriate physician. Do not automatically attribute these difficulties to interoception or autism.
7. Help them distinguish between physical fatigue and a lack of interest
This point can change how a family interprets certain situations.
Imagine someone stops participating in an activity after a while.
The family might assume the person has simply become bored.
However, they might actually be tired, having failed to notice the signs in time.
You can teach them to observe the following:
Do my eyelids feel heavy?
Is it difficult for me to stay focused?
Do I need to sit down?
Do I feel exhausted after doing this activity?
Do I need some quiet time?
They don’t need to identify fatigue perfectly.
They can start by recognizing simple cues and linking them to an action:
"I’m tired; I’m going to rest."
You can also offer breaks during longer activities, tailoring them to the person’s capacity and preferences.
8. Teach them to recognize when they are too hot or too cold
Temperature might seem obvious to many, but it isn’t always recognized early on.
Someone might continue wearing a jacket even when they are hot, or fail to realize they need to bundle up when the temperature drops.
You can help them connect environmental conditions with their bodily sensations.
For example:
HOT DAY: Observe whether they feel hot and need lighter clothing, shade, or water.
COLD DAY: Check whether they feel cold and need an extra layer of clothing.
AFTER EXERCISE: Identify whether they are sweating and need to rest or cool down.
Weather forecasts can be a helpful tool for choosing appropriate clothing, but it is also important to learn how one’s own body responds.
9. Introduce a short pause to listen to the body
This is a simple activity you can practice at home.
Once or twice a day, when the person is calm, you can take a moment to check in on how they are feeling.
There is no need for a long session.
Try asking four questions:
1. How is my body feeling?
2. Am I hungry or thirsty?
3. Do I need to use the bathroom?
4. Do I need to move or rest?
If they don’t know how to answer, you can offer some options.
They could also point to an image or simply say they don’t know.
There is no need to insist that they identify every single sensation.
Over time, these quick check-ins can become an opportunity to learn how to pay attention to physical needs.
If the person finds this type of activity unpleasant, respect their preference and look for another way to provide support.
10. Use a log to identify personal patterns
Instead of looking for a one-size-fits-all solution, observe what happens in daily life.
You can create a simple chart:
| Time of Day | Observations | Helpful Support |
| ---------------- | ---------------------------------- | --------------------------- |
| Morning | Doesn’t usually ask for water | Keep a water bottle accessible |
| After playing | Seems tired | Offer a break |
| Before going out | Doesn’t remember to use the bathroom | A respectful reminder |
| Afternoon | Eats only after feeling very hungry | Review schedules and cues |
Use the chart to discover patterns, not to label the person.
It is also important to record what the person communicates themselves.
You might find that they are very good at recognizing some signals, but need support with others.
This allows you to work on specific skills without turning all of their daily activities into an assessment.
11. Use the "Notice, Name, and Respond" method
This is a practical tool that you can introduce gradually.
NOTICE
What is happening inside my body?
NAME
Is it hunger, thirst, feeling cold, feeling hot, tiredness, or a need to use the restroom?
RESPOND
What do I need to do?
For example:
NOTICE: My mouth is dry.
NAME: I might be thirsty.
RESPOND: I will drink some water.
Another example:
NOTICE: I am struggling to stay awake.
NAME: I am tired.
RESPOND: I am going to rest.
This is not a test that the person must pass.
It is a way to practice connecting physical sensations with everyday needs.
12. Adapt the tools to each person’s way of communicating
Not everyone can express how they feel using words.
Some people use gestures, others use photographs, writing, or augmentative and alternative communication (AAC) systems.
You can prepare a small board:
| Image or word | Meaning |
| --------------- | ----------------------- |
| HUNGRY | I am hungry |
| THIRSTY | I am thirsty |
| TIRED | I am tired |
| HOT | I am hot |
| COLD | I am cold |
| TOILET | I need to use the restroom |
| REST | I need to rest |
Place it where the person can easily refer to it.
If the person already uses a communication system, incorporate these options into that system rather than introducing a different one unnecessarily.
The tool should make it easier for the person to express their needs; it should not force them to change how they communicate.
13. Do not confuse physical signs with emotions
This point deserves special attention.
Sometimes, a person might say:
"I don't feel well."
But they may not know whether what they are feeling is tiredness, nervousness, hunger, or frustration.
Physical sensations and emotions can be related, but they do not mean the same thing.
For example, noticing that one’s heart is beating rapidly does not automatically mean that anxiety is present.
There could be many explanations.
You can help the person observe:
"Is your body tired?"
"Has something happened that worries you?"
"Do you need to rest?"
"Are you feeling any discomfort?"
Listen to their response, and avoid assigning an emotion to them that they have not identified themselves.
14. Do not wait for a difficulty to arise before offering support
If you know that a person tends to forget to drink water when they are engaged in an activity they enjoy, you can keep water within their reach.
If they usually get tired after walking, you can plan for a break.
If they need extra help recognizing when to use the restroom, you can agree on reminders that respect their privacy.
This does not replace the process of learning to recognize one’s own internal signals.
It is an external form of support that helps address needs while new skills are being developed.
15. Avoid these mistakes when teaching body awareness
Certain responses can hinder the learning process.
Mistake 1: Constantly telling the person what they are feeling.
Instead of saying "You are hungry," ask what they notice and offer options.
Mistake 2: Getting upset because they don’t give notice in time.
If they still need support to recognize a signal, we should help them identify it.
Mistake 3: Forcing them to eat, drink, or use the restroom without considering their actual needs.
Reminders should respect the person’s well-being and individual needs.
Mistake 4: Interpreting all behavioral changes as a lack of self-regulation.
There may also be underlying illnesses, pain, or physical needs that should be considered.
Mistake 5: Expecting them to learn all the signals at once.
Start with one or two everyday needs and progress according to their capacity.
- A family activity: My body’s signal map
You can prepare a simple outline of the human body and place various cards around it.
BELLY: hunger or a feeling of fullness.
MOUTH: thirst or dryness.
BLADDER: the need to use the restroom.
EYES: tiredness or the need to rest.
SKIN: feeling cold or hot.
MUSCLES: tension or fatigue after an activity.
These associations are examples to explore, not universal diagnostic signs.
When the person notices something, they can point to a part of the drawing, choose a card, or explain it in words.
For example:
"My mouth is dry."
"I’m hot."
"I need to rest."
Afterward, you can discuss what action might help.
This activity can be done once or twice a week, or whenever a specific need arises. There is no need to turn it into a daily obligation.
When should you seek professional help?
If a person frequently struggles to recognize their physical needs—and this affects their eating, hydration, use of the restroom, rest, or independence—it may be helpful to consult a healthcare professional.
An occupational therapist with experience in sensory processing can assess how these difficulties manifest in daily activities and suggest personalized adaptations.
It is also advisable to consult a doctor if the following occur:
- Persistent constipation.
- Repeated episodes of dehydration.
- Significant changes in appetite.
- Urinary issues.
- Excessive or unexplained fatigue.
- Sudden changes in the perception of physical needs.
Interoception is an evolving field. A scientific review published in 2025 noted that there are still limitations regarding the assessments and intervention programs available to develop this capacity in children. Therefore, it is best to avoid promises that any single exercise will resolve these challenges.
- Most importantly: learning to listen to one’s own body is also a way of learning to take care of oneself.
One person might need a reminder to drink water.
Another might require a visual aid to identify that they are hungry.
Yet another might not yet recognize when they need to rest.
These differences do not mean that the person cannot develop self-care skills.
They simply mean that the person may need a different way to learn them.
Families can play an important role by observing, creating opportunities for practice, and providing tools that make it easier to communicate physical needs.
But there is one thing we must never forget:
We do not want a person to be permanently dependent on someone else to tell them when to eat, drink, or rest. We want to help her gradually recognize her own signals and participate in decisions regarding her well-being.
Each time she manages to identify a need, communicate it, and respond to it with less assistance, she will have developed an important skill.
Because autonomy also begins within one’s own body.
Frequently Asked Questions About Interoception and Autism
What is interoception in the context of autism?
It is the ability to recognize and interpret signals originating from within the body, such as hunger, thirst, temperature, the need to use the restroom, or certain emotional states. Some autistic individuals may experience differences in this perception.
Why might an autistic person not realize they are thirsty?
They may have difficulty recognizing internal signals of thirst or paying attention to them. However, this is not the case for all autistic individuals, and other factors may also play a role.
How can an autistic child be taught to recognize hunger?
You can observe the signals that appear before eating, use simple vocabulary, and connect specific sensations to the need for food. Reminders can be helpful while the child develops this skill.
Why do some autistic individuals not signal when they need to use the restroom?
In some cases, they may have difficulty recognizing internal signals from the bladder or communicating the need in time. There may also be other physical, emotional, or environmental causes that should be considered.
Can visual cards help?
Yes. They can make it easier for an individual to identify and communicate needs—such as hunger, thirst, fatigue, feeling cold or hot, or the need to use the restroom—provided that the format is tailored to their level of understanding and communication.
Can interoception be improved?
Certain strategies—such as body awareness exercises, visual supports, and reminders—can help some individuals recognize and respond to their needs. However, evidence regarding specific interventions remains limited, and results vary from person to person.
Explore
Join us in the adventure of parenting.
Resources
Support
2021 © 2025. All rights reserved.