Two Types of Trauma: “BIG T” and “Little t”

Have you ever heard the word “trauma” and immediately pictured something catastrophic? Like being the sole survivor of an airplane crash, or experiencing a major natural disaster? And while YES, those are absolutely deeply traumatic, trauma isn’t always about such headline-grabbing, horrific events.

As someone who’s spent a lot of time learning about how our brains work (and chatting with my amazing therapist friends!), I’ve come to understand that trauma shows up in many forms. Let’s explore the difference so you can see that whatever you’ve experienced, your trauma is totally valid.

“Big-T” Trauma: The Life-Threatening Event or Experience

These are the events that are typically single, overwhelming incidents that pose a direct threat to your life or safety, or to someone you love. They shake your world to its core.

• Examples:
• Combat exposure
• Acts of terrorism or violent crime
• Childhood physical or sexual abuse
• Any kind of assault or physical attack
• Major natural disasters (like a hurricane or earthquake)
• Serious accidents (like a car crash)
• Sudden, unexpected loss of a loved one or a beloved pet

These experiences can lead to significant shifts in how we view the world and ourselves, often resulting in classic symptoms of PTSD.

“Little-t” Trauma: The Repeated and Disturbing Life Experiences

This is the type of trauma that often flies under the radar, yet it can be incredibly impactful. “Little-t” trauma builds up in our nervous system over time, often causing an involuntary and overwhelming reaction that feels disproportionate to the current situation. A single instance might not feel like “trauma,” but when these experiences happen repeatedly, they accumulate.

Think of it like drops of water slowly filling a bucket. One drop is nothing, but a steady stream eventually overflows. Naturally, everybody’s reaction is different, but the accumulation of these experiences definitely has a profound effect on the brain and nervous system.

In fact, research has found that repeated, disturbing life experiences can sometimes be more insidious than a single life-threatening event. How is that possible? Because all day long, our brain takes in information, processes it, and decides what to do with it. If our brain decides something isn’t worth fully processing (perhaps because it’s too overwhelming at the time, or there’s too much coming in), it doesn’t quite “file it away” correctly. Your nervous system gets totally overwhelmed, creating fragmented, difficult memories.

Examples:

• A parent consistently looking at you “that way” that made your stomach drop.
• Hearing your parents fighting loudly night after night.
• Working for a demanding, critical boss year after year.
• Any relationship dynamic with a narcissist, especially a parent or partner.
• The constant, disturbing background sounds in certain environments (like the sounds of a slaughterhouse day after day).
• Persistent bullying or feeling consistently excluded.
• Emotion is Data to the Brain: My Deer Story
  For the brain, emotion is simply another form of data that gets processed, just like anything else that enters our senses. The brain isn’t judging the “type” or “size” of the trauma; it’s just reacting to the intensity and how well it can process the information.

I remember several years ago on a very foggy night, I accidentally hit a deer. The deer flipped into the air and landed right in front of my headlights. It still had its spots. As I got out of the car, amazingly, the deer got up and ran away. After that night, I avoided driving on that particular road for a long time. And for a while, every time I saw a baby deer, I felt a deep wave of sadness and anxiety.

Over time, the anxiety lessened considerably, and I rarely think about hitting that deer anymore. My brain has processed the incident, and the intense feelings associated with seeing that baby deer in my headlights eventually went away. That’s how our brains can work when given the chance to process.

What Happens When There’s Trauma (and Why It Matters)

Trauma, whether “Big T” or “little t,” is essentially a type of extreme activation in the nervous system. Mild activation is perfectly healthy and even helpful – it keeps us alert and responsive. But when we experience extreme, prolonged, or repeated activation, it can disrupt the natural functioning of our brain’s centers.

During these overwhelming moments, your pre-frontal cortex (our center for higher reasoning, logic, and calm decision-making) can actually go “offline,” while the amygdala (your brain’s lightning-fast alarm bell, which we’ve talked about) takes over. There’s also an unhealthy release of stress hormones and neurotransmitters, like cortisol and adrenaline. The hippocampus, which is crucial for forming new memories and mapping time and place, is very sensitive to those chemicals, causing it to shut down or become disorganized.

This is why, after trauma, our implicit memory stores emotional reactions and raw sensory data in fragments – not as a coherent story. It’s like your brain’s filing system got totally scrambled, and it can’t quite make sense of past events. It impacts our pre-frontal cortex, which is designed to balance our emotional responses by taking information from our limbic system and helping us make sense of things happening in the present. If it’s fragmented by trauma, it can’t process information the way it’s designed to, leaving us feeling stuck or overwhelmed.

Hope and Healing: Rewiring Your Brain for a Brighter Tomorrow

The beautiful truth is that your brain is incredibly adaptable, designed for healing and resilience. Just as my brain eventually processed the deer incident, we can gently guide our brains to process past traumas, big or small.

Therapies like EMDR and Hypnotherapy are powerful tools that help to re-engage your brain’s natural processing abilities. They can help calm that overactive amygdala, bring your pre-frontal cortex back online, and help those fragmented memories find their proper place, allowing you to move forward.

No matter what kind of trauma you’ve experienced, your reactions are valid, and healing is absolutely possible. You are not “crazy,” and you don’t have to carry the weight of those past experiences forever. It’s about understanding how your amazing brain works and giving it the support it needs to truly heal and thrive.