Why Trauma Can Make It Hard to Feel What's Happening Inside: Understanding Interoception and Exteroception

Have you ever been asked, "What are you feeling right now?" and found yourself drawing a blank?

Or maybe you've noticed that you don't realize you're hungry until you're ravenous, don't recognize you're anxious until you're having a panic attack, or only notice you're exhausted once you're completely burned out.

If this sounds familiar, you're not alone. Many people who have experienced trauma struggle to recognize what is happening inside their bodies. This isn't because they're disconnected by choice or "bad" at emotions—it's because trauma can change the way our nervous system processes internal and external information.

Understanding the difference between interoception and exteroception can help explain why.

What Is Interoception?

Interoception is your brain's ability to notice and interpret signals coming from inside your body.

It allows you to recognize experiences like:

• Hunger and fullness

• Thirst

• A racing heart

• Muscle tension

• Butterflies in your stomach

• Nausea

• Warmth or cold

• The urge to use the bathroom

• Fatigue

• Calmness or activation

• Emotions such as anxiety, sadness, excitement, or anger as they show up physically

Think of interoception as your body's internal communication system. Every moment, your organs, muscles, heart, lungs, and digestive system send thousands of signals to your brain. Your brain interprets these signals and uses them to help regulate your emotions, behaviour, and physical wellbeing.

When interoception is working well, you might notice:

• "I'm starting to get stressed—I should take a break."

• "I'm feeling hungry."

• "My shoulders are getting tense."

• "I think I'm feeling disappointed."

These internal cues help us meet our needs before they become overwhelming.

What Is Exteroception?

While interoception focuses on what's happening inside your body, exteroception is your ability to notice information coming from the outside world through your senses.

This includes:

• What you see

• What you hear

• What you smell

• What you taste

• What you touch

Exteroception helps us determine whether our environment feels safe or dangerous.

For example:

• Hearing a baby cry

• Seeing a smiling friend

• Smelling smoke

• Feeling the warmth of the sun

• Noticing a loud bang nearby

Your nervous system is constantly combining information from both interoception and exteroception to decide how to respond.

How Trauma Changes These Systems

When someone experiences trauma, the nervous system adapts to help them survive.

If your brain has learned that the world is unpredictable or unsafe, it often becomes much more focused on scanning the environment for potential danger.

This is called hypervigilance.

Instead of paying attention to subtle internal signals like hunger, sadness, or fatigue, your brain prioritizes questions like:

• Is someone angry?

• Did I hear a strange noise?

• What mood is everyone else in?

• Am I safe?

• What could go wrong?

In other words, attention shifts outward.

This isn't a conscious decision. It's a survival strategy.

When survival is the priority, internal signals become less important than detecting possible threats.

When It Becomes Difficult to Sense Inside

Over time, many people with trauma histories become less aware of their internal experiences.

They may:

• Forget to eat until they feel shaky

• Ignore pain until it becomes severe

• Have difficulty identifying emotions

• Feel disconnected from their body

• Push through exhaustion without realizing they need rest

• Struggle to know what they need

• Feel "numb" much of the time

Others experience the opposite.

Instead of not noticing internal sensations, they become highly aware of them.

A small increase in heart rate may immediately feel dangerous.

Normal bodily sensations can trigger intense anxiety or panic because the nervous system has learned to associate certain sensations with past traumatic experiences.

Both experiences reflect changes in how the nervous system processes internal information.

Trauma Doesn't Just Affect Thoughts

Many people think of trauma as something stored in memories or thoughts.

In reality, trauma also changes how the body and brain communicate.

Brain regions involved in interoception—including the insula, anterior cingulate cortex, and areas that help regulate the autonomic nervous system—can function differently following chronic stress or traumatic experiences.

This can make it harder to accurately interpret internal body signals.

It's important to know that this is not a personal failing. These changes reflect adaptations that once helped someone survive.

Why Reconnecting with the Body Can Feel Uncomfortable

Many therapeutic approaches encourage people to "listen to your body."

For someone with a history of trauma, this can feel surprisingly difficult—or even frightening.

If paying attention to internal sensations has historically been associated with overwhelming emotions, pain, or danger, turning inward may initially increase distress.

This is one reason trauma therapy often moves slowly.

Rather than forcing awareness, therapy helps people gradually build the capacity to notice internal experiences while staying regulated.

Over time, the nervous system learns that internal sensations can be experienced safely.

Can Interoception Improve?

Yes.

Interoception is a skill that can be strengthened, but for many people with a history of trauma, reconnecting with internal sensations is not as simple as paying more attention to the body. If your nervous system has learned that turning inward feels overwhelming or unsafe, trying to do so on your own can sometimes increase distress.

Working with a trauma-informed therapist can help you reconnect with your body in a way that feels safe and manageable. Rather than pushing you to notice everything at once, a skilled therapist can help you understand how your nervous system responds to stress, recognize your unique patterns of protection, and gradually expand your ability to notice internal sensations without becoming overwhelmed.

Healing isn't about forcing yourself to feel more. It's about developing a relationship with your nervous system that is grounded in safety, curiosity, and self-compassion. As your nervous system becomes more regulated, many people find they are better able to recognize their emotions, identify their needs, and trust the signals coming from their bodies.

The Takeaway

Interoception helps us understand what's happening inside our bodies, while exteroception helps us understand what's happening around us. Both are essential for helping us navigate daily life.

Trauma can shift our attention away from internal cues and toward constant monitoring of the external world. This adaptation may have been protective at one time, but it can make it difficult to recognize emotions, physical needs, or signs of stress.

The encouraging news is that these skills can be strengthened. With patience, support, and trauma-informed care, many people gradually reconnect with their bodies and develop a greater sense of safety, awareness, and self-understanding.

At Being and Becoming Counselling and Wellness Services, our trauma-informed therapists understand that healing isn't about forcing yourself to reconnect with your body before you're ready. We work collaboratively with clients to better understand their nervous system, strengthen interoceptive awareness, and gradually rebuild a sense of safety, connection, and trust in themselves. Whether you've experienced a single traumatic event, complex trauma, or chronic stress, we're here to support you at a pace that feels safe and manageable.