Interoception
Your body is always sending messages.
Hungry. Cold. Getting tired. Need the bathroom. That scratch on your arm is hurting a bit. The messages arrive constantly, like a low-level broadcast running underneath everything else you're doing, and most of the time you pick them up without thinking. Your stomach growls and you reach for a snack. Your eyes itch and you rub them. Your shoulders tighten and you shift in your chair.
This sense, of feeling what is going on inside your own body, has a name: interoception. It is sometimes called the eighth sense, the one that runs inward rather than out.
For some people, this sense runs differently. The signals are there, but they arrive faint, or delayed, or in a form that is hard to read. Hunger might not show up as a feeling of needing food; it might show up as a headache, or a bad mood, or suddenly feeling like everything is too much. Pain might register as "something is slightly wrong" before it arrives as pain. The need to go to the bathroom might not appear until it is urgent.
This is not inattentiveness. The body is sending the signals. The brain is having trouble receiving them clearly.
Interoception sits at the intersection of physical experience and emotional awareness, and this is part of what makes differences in it consequential beyond the basics of remembering to eat and drink.
Research on interoception in autistic people shows a complicated picture. Many autistic individuals report difficulty perceiving or accurately interpreting internal body signals. The experience tends to vary: some people describe signals that are too faint to notice reliably; others describe signals that are present but confusing, arriving as the wrong category of information. A child who is hungry might register the sensation not as "I need food" but as irritability, overwhelm, or low-grade distress that they and everyone around them find puzzling until someone hands them a sandwich.
The connection to emotional processing matters. Emotions are not purely mental events; they are also body events, and interoception is part of how we read them. A nervous heartbeat, a knot of anxiety in the stomach, the particular tightness of frustration across the chest: these are the body's first-draft versions of emotions, and they are the information the mind uses to name and respond to what it's feeling. When interoceptive signals are harder to read, identifying emotions in real time becomes harder too. This is one of the roots of alexithymia, the difficulty with naming and describing feelings, which is covered in the next chapter.
For parents and adults, the most useful shift is from "they should just know" to "they might genuinely not know." A child who forgets to drink all day, who pushes through pain without mentioning it, who arrives at meals past the point of pleasantly hungry: they are not performing obliviousness. The signal arrived late, or quietly, or as something else entirely.
What helps is making the external provide what the internal has not reliably provided. Scheduled mealtimes rather than eating only when hungry. Visual or timer reminders to drink water. Regular check-ins, put into words: "you've been busy for two hours, let's see if your body needs anything." Helping the child learn, slowly and over time, to decode the unusual ways their body might announce needs that other children get more directly.
This is slow work, and it doesn't fix the underlying difference. But a child who learns to read their own unusual signals, and who has adults around them who understand why the signals are unusual, is in a much better position than one who is simply told they need to pay more attention.
- Building external structure around needs the body doesn't signal clearly (meal schedules, water reminders, regular rest breaks).
- Helping the child learn their own body's unusual vocabulary for needs ("when you feel like everything's too much, are you hungry?").
- Taking complaints of discomfort or pain seriously, even if they seem disproportionate or oddly timed.
- Allowing bathroom breaks without requiring explanation or justification.
- "You can't be hungry, you just ate." (The timing of hunger signals is the difference, not the validity of the need.)
- Assuming the child is exaggerating pain because they didn't mention it sooner.
- Expecting the child to self-report needs reliably without support structures.
- Treating forgetfulness about eating or drinking as laziness or stubbornness.