Glossary

Plain-language glossary of trauma terms

Trauma

Plain language: "An experience so overwhelming that your mind and body couldn't process it normally at the time — and the effects of that incomplete processing that live on long after the event itself."

Trauma is not the event. It is what happens inside you as a result of the event. Two people can experience the same situation and one will develop trauma symptoms while the other does not — because trauma is determined not by what happened but by how the nervous system responded to it and whether it was able to process it fully afterward.

Trauma exists on a spectrum. At one end, single-incident trauma — sometimes called acute trauma — results from a specific event such as an accident, assault, natural disaster, or sudden loss. At the other end, chronic trauma results from repeated or prolonged exposure to distressing experiences. Complex trauma — most relevant to childhood trauma survivors — refers to repeated interpersonal trauma, particularly in early life, at the hands of people who were supposed to provide safety.

What makes something traumatic is often the combination of three factors: it felt life-threatening or overwhelming, it happened suddenly or without warning, and there was no escape or adequate support afterward. For children, a fourth factor is critical — the trauma was caused by, or not protected against, by the adults who were responsible for their safety. This is what makes childhood trauma so foundational and so far-reaching in its effects.

Trauma affects every system of the body. It changes brain structure and function — particularly the amygdala, hippocampus, and prefrontal cortex. It disrupts the stress response system, the immune system, and the digestive system. It shapes how we think, how we feel, how we relate to others, and how we understand ourselves. The ACEs research on this site demonstrates clearly how childhood trauma creates measurable physical health consequences decades later.

Trauma is not a life sentence. It is highly treatable — and understanding it is the first step toward healing it.

Best for awareness: trauma-informed therapy, EMDR, somatic therapy, IFS, CBT, nervous system regulation work

What survivors often say:
"I spent my whole life thinking I was broken. Difficult. Too much. It wasn't until I understood what trauma actually is — and what it does to a developing nervous system — that I realized I wasn't broken at all. I was injured. And injuries can heal."

Post-Traumatic Stress Disorder (PTSD)

Plain language: "A mental health condition that develops when the nervous system gets stuck in survival mode after a traumatic event — replaying the danger long after it has passed."

PTSD develops when the brain's normal process of filing away a threatening experience gets disrupted — leaving the memory unprocessed and the nervous system unable to distinguish between the past threat and the present moment. Rather than being stored as something that happened, the trauma stays active — intruding into daily life through flashbacks, nightmares, hypervigilance, and avoidance.

PTSD was first formally recognized in relation to combat veterans but is now understood to develop after any traumatic experience — accidents, natural disasters, assault, childhood abuse, medical trauma, or witnessing violence. Not everyone who experiences trauma develops PTSD. Factors including the severity and duration of the trauma, available support, and prior history all play a role.

Core symptoms fall into four clusters:

• Intrusion — Flashbacks, nightmares, and involuntary memories that bring the trauma back as if it's happening now

• Avoidance — Staying away from people, places, thoughts, or feelings that are reminders of the trauma

• Negative changes in thinking and mood — Persistent shame, guilt, distorted beliefs about yourself or the world, emotional numbness, feeling detached from others

• Changes in arousal and reactivity — Hypervigilance, exaggerated startle response, difficulty sleeping, irritability, difficulty concentrating

PTSD is highly treatable. Evidence-supported treatments include EMDR, Prolonged Exposure Therapy, Cognitive Processing Therapy, and trauma-focused CBT — all covered in the therapy types section of this glossary.

The difference between PTSD and C-PTSD: PTSD typically develops from a single traumatic event or a defined period of trauma. C-PTSD develops from prolonged, repeated trauma — particularly in childhood, and particularly when there was no escape. C-PTSD includes all of the above plus additional symptoms around emotional regulation, self-perception, and relationships. Both are real, both are treatable, and both deserve to be taken seriously.

Best for awareness: EMDR, Prolonged Exposure Therapy, Cognitive Processing Therapy, trauma-focused CBT, somatic therapy

What survivors often say:
"I didn't think I had PTSD because I wasn't a soldier. Nobody told me that what happened to me as a child could do the same thing to a nervous system. Understanding PTSD — and then C-PTSD — was the first time I had a framework for why my brain worked the way it did."

Complex PTSD (C-PTSD)

Plain language: "PTSD that develops not from one moment but from a pattern — repeated trauma, often in childhood, that rewires not just your nervous system but your sense of who you are."

Complex Post-Traumatic Stress Disorder was first described by psychiatrist Judith Herman in her landmark 1992 book Trauma and Recovery — book #5 on the Still Here top 25 list. It is now recognized in the ICD-11 (the World Health Organization's diagnostic manual) as a distinct condition from PTSD, though it remains absent from the DSM-5 used in North America — a significant gap that has left many survivors misdiagnosed for years.

C-PTSD develops from prolonged, repeated trauma — particularly when there was no escape, as in childhood abuse, neglect, or family dysfunction. Where PTSD is typically tied to a specific traumatic event, C-PTSD is the result of a traumatic environment — one that shaped the developing brain and nervous system over months or years during the most formative period of a person's life.

C-PTSD includes all of the core PTSD symptoms — intrusion, avoidance, negative changes in thinking and mood, changes in arousal and reactivity — plus three additional clusters that distinguish it:

Emotional dysregulation — Difficulty managing emotions, intense emotional reactions that feel disproportionate, or the opposite: emotional numbness and shutdown. The nervous system learned to exist in extremes because the environment demanded it.

Negative self-concept — Deep, pervasive feelings of shame, worthlessness, defectiveness, or being fundamentally different from other people. Not just feeling bad about what happened — feeling that what happened is evidence of something wrong with you at your core.

Relational difficulties — Trouble trusting people, difficulty maintaining relationships, patterns of either avoiding closeness or becoming intensely attached, difficulty with boundaries. When the source of trauma was a relationship — particularly a caregiving relationship — the nervous system learns that closeness equals danger.

C-PTSD is frequently misdiagnosed as depression, bipolar disorder, borderline personality disorder, or anxiety — because the symptoms overlap and because clinicians who aren't specifically trained in complex trauma may not recognize the pattern. This misdiagnosis can lead to years of treatment that doesn't address the root cause.

C-PTSD is highly treatable. Recovery is not linear — it is layered, sometimes slow, and sometimes involves getting worse before getting better as buried material comes to the surface. But healing is real and it is possible.

Best for awareness: EMDR, IFS, somatic therapy, DBT for emotional regulation, trauma-focused CBT, Pete Walker's work on C-PTSD

What survivors often say:
"I'd been in and out of therapy for years. Depression, they said. Anxiety. Take this medication. Nothing changed. When someone finally said C-PTSD and explained what it was — I cried for an hour. Not because the news was good. Because for the first time, someone had named what was actually wrong."

Rumination

Plain Language: "When your mind gets stuck on replay — turning the same thought, memory, or worry over and over without being able to let it go."

Rumination is the tendency to repetitively and passively focus on distressing thoughts, feelings, or past events — particularly their causes and consequences — without moving toward resolution or action. It's different from healthy reflection or problem-solving. Where reflection leads somewhere, rumination circles back to the same place again and again.

For trauma survivors, rumination is extremely common and often feels involuntary — like a loop you can't turn off. The brain returns compulsively to unresolved pain, unanswered questions, or moments of shame and regret. This happens because the nervous system is still trying to process something it hasn't been able to fully integrate. In that sense, rumination is not a character flaw or a sign of weakness. It is an incomplete healing process looking for a way through.

Research consistently links rumination to depression, anxiety, and C-PTSD. It tends to worsen at night, in quiet moments, or when other distractions fall away — which is why so many survivors struggle with sleep. The antidote is not to force the thoughts to stop, but to gently interrupt the loop and redirect attention — through grounding techniques, movement, breath work, or talking to someone safe.

Common signs of rumination:

• Replaying past conversations or events looking for what you could have done differently

• Fixating on what others think of you

• Getting caught in "what if" or "why did this happen" loops

• Lying awake at night with thoughts you can't turn off

• Feeling worse the more you think about something rather than better

What survivors often say:

"I could spend hours going over the same conversation, the same memory, the same moment — trying to find the answer that would make it make sense. I didn't know there was a name for it. I just thought I was broken. Understanding rumination helped me stop fighting myself and start working with what was actually happening."

Dissociation

Plain language: "When your mind leaves the room to protect you from something it can't handle — a disconnection from thoughts, feelings, body, or surroundings that happens automatically, without your permission."

Dissociation is one of the nervous system's most sophisticated protective responses. When an experience is too overwhelming to process consciously, the mind creates distance from it — separating the person from their thoughts, feelings, body sensations, surroundings, or even their sense of identity. It is not a choice. It is not weakness. It is the nervous system doing something extraordinarily clever to keep a person functional in the face of something unbearable.

Dissociation exists on a spectrum. At the mild end — where everyone occasionally experiences it — it looks like highway hypnosis, zoning out during a conversation, or losing track of time. At the moderate end, trauma survivors may experience depersonalization (feeling detached from your own body, as if watching yourself from outside), derealization (the world feeling unreal, dreamlike, or distant), emotional numbing, or memory gaps. At the severe end, dissociation can involve significant identity disruption and is associated with diagnoses such as Dissociative Identity Disorder (DID).

For childhood trauma survivors, dissociation typically developed as a response to experiences that were inescapable. When a child cannot fight, cannot run, and cannot make the pain stop, the mind learns to leave. This is adaptive — it kept the child functional. The problem is that the nervous system doesn't automatically update this response when the threat is gone. Triggers in adulthood can activate the same dissociative response that protected the child, even when the adult is actually safe.

Common signs of dissociation in trauma survivors include: feeling foggy or spacey, losing track of time, feeling emotionally flat or disconnected, not being able to remember parts of a conversation or event, feeling like things around you aren't real, feeling detached from your own body, or finding yourself somewhere without clearly remembering how you got there.

Healing from dissociation involves building a stronger connection to the present moment — through grounding techniques, somatic work, and therapy approaches like EMDR and IFS that work with the parts of the self that carry the dissociated material. The goal is not to force the mind to stay present before it feels safe — it is to gradually build enough safety that staying present becomes possible.

Best for awareness: grounding techniques, somatic therapy, EMDR, IFS, body scan meditation, window of tolerance work

What survivors often say:
"I used to describe it as going away inside my own head. I could be in a room full of people and suddenly I wasn't there. It terrified me — I thought I was going crazy. Understanding dissociation as a protective response, something my nervous system learned to do for very good reasons, was one of the most relieving things I ever heard."

Trigger / Being Triggered

Plain language: "When something in the present moment activates your nervous system's memory of a past threat — and your body responds as if the danger is happening right now."

A trigger is any stimulus — a sound, a smell, a word, a tone of voice, a physical sensation, a situation, or even a time of year — that the nervous system associates with a past traumatic experience. When that stimulus is encountered, the brain and body respond not to what is actually happening in the present but to what happened in the past — because the nervous system hasn't yet learned to tell the difference.

This happens because traumatic memories are stored differently from ordinary memories. Normal memories are processed and filed away with context — "that happened then, it's over now." Traumatic memories, particularly those that weren't fully processed at the time, can remain active in the nervous system — more like a live wire than a filed document. When the trigger touches the wire, the full alarm response fires.

Being triggered can look very different from person to person and from trigger to trigger. For some it looks like sudden panic or rage. For others it looks like going quiet, shutting down, or disappearing inside themselves. For others still it looks like a physical response — racing heart, nausea, difficulty breathing, the urge to run — with no conscious awareness of an emotional cause. All of these are valid. All of them are the nervous system doing exactly what it learned to do.

Triggers are not oversensitivity. They are not weakness. They are not being dramatic. They are evidence of an unprocessed experience looking for resolution. The goal of trauma treatment is not to eliminate triggers but to reduce their frequency and intensity, and to build the capacity to tolerate and work with them when they arise — rather than being completely overwhelmed by them.

Common triggers for childhood trauma survivors include: raised voices or certain tones, physical touch, specific smells, particular times of year, conflict, feeling unheard or dismissed, intimacy, abandonment cues, authority figures, and the experience of being out of control.

Best for awareness: grounding techniques, window of tolerance work, EMDR, somatic therapy, identifying and mapping personal triggers with a therapist

What survivors often say:
"I couldn't explain why a certain tone of voice made me want to disappear. I thought I was overreacting. Now I understand — it wasn't about the person using that voice. It was about who used that voice on me when I was seven years old. My nervous system recognized something my conscious mind didn't. That's not weakness. That's memory."

Hypervigilance

Plain language: "Living with your nervous system permanently set to high alert — always scanning for danger, even when you're safe, even when you're exhausted, even when every rational thought tells you there's nothing to fear."

Hypervigilance is a state of heightened sensory sensitivity and constant alertness to potential threat. For trauma survivors — particularly those who grew up in unpredictable or dangerous environments — hypervigilance was not a symptom. It was a survival strategy. The child who learned to read a parent's mood from the sound of footsteps, or to anticipate danger from the tension in a room, was doing something extraordinary: they were staying safe by staying alert.

The problem is that the nervous system doesn't automatically turn this off when the danger is gone. The body keeps scanning — for the shift in tone that means something's wrong, for the slight change in energy that means someone is angry, for the exit when you walk into a room, for the subtle signals that other people don't even register. This is exhausting. And it is one of the reasons so many trauma survivors feel chronically tired even when they haven't done anything physically demanding.

Hypervigilance manifests differently in different people. It might look like being easily startled. It might look like difficulty relaxing in public or in unfamiliar environments. It might look like always sitting with your back to the wall or facing the door. It might look like reading into every social interaction for hidden meaning or signs of danger. It might look like difficulty sleeping because the nervous system won't fully let its guard down. It might look like being the person who always notices everything — the mood in a room, the tone beneath the words, the things nobody else seems to pick up.

Over time, chronic hypervigilance takes a significant toll — on the body, on relationships, on the ability to be present and at rest. Healing involves gradually teaching the nervous system that the current environment is safe — through consistency, through therapeutic relationships, through nervous system regulation practices, and through the slow accumulation of experiences in which nothing bad happens.

Best for awareness: somatic therapy, window of tolerance work, nervous system regulation, EMDR, mindfulness, body scan meditation, safe environment building

What survivors often say:
"I thought everyone lived like this — always tense, always listening, always one step ahead of whatever was about to go wrong. I didn't know there was a name for it. I didn't know most people could walk into a room without immediately clocking every exit. Understanding hypervigilance was the first time I understood that my nervous system wasn't defective — it was doing exactly what it had been trained to do."

Inner Child

Plain language: "The part of you that still carries what the child version of you experienced — the unmet needs, the buried feelings, and the beliefs about yourself and the world that were formed before you had the tools to question them."

The inner child is a psychological concept describing the emotional experiences, unmet needs, and formative beliefs that developed in childhood and continue to influence adult thought, feeling, and behaviour. It is not a metaphor for immaturity. It is a recognition that the experiences of early life — particularly painful or traumatic ones — don't simply disappear when we grow up. They live on, often beneath our conscious awareness, shaping how we respond to the world.

When a child experiences trauma, neglect, or emotional deprivation without adequate support, the emotional wound doesn't automatically heal with age. The child learns certain things about themselves — I am not safe, I am not enough, I am a burden, I am bad, I am unlovable — and those beliefs become the invisible architecture of adult life. They show up in the relationships we choose, the ways we cope under stress, the things we cannot tolerate, and the ways we talk to ourselves when no one else is listening.

Inner child work — sometimes called reparenting — involves building a conscious relationship with these younger parts of the self. It means learning to identify when the inner child has been activated (often recognizable by disproportionate emotional responses, a sudden feeling of being very small, or reverting to childlike coping strategies under stress), and responding with the compassion, safety, and attunement that was absent in the original experience.

This work is central to approaches like IFS (Internal Family Systems), which TJ writes about in detail in relation to book #41 on the personal shelf — Align Your Mind by Britt Frank. It is also foundational to EMDR, somatic therapy, and most trauma-informed therapeutic approaches, even when it isn't named explicitly.

Inner child work can feel strange at first — particularly for survivors who were taught that their needs didn't matter, or that vulnerability was weakness. But it is some of the most profound and lasting healing work available. What the child needed then, the adult can learn to provide now.

Best for awareness: IFS, EMDR, somatic therapy, loving kindness meditation, reparenting practices, journaling

What survivors often say:
"I thought healing meant leaving the past behind — moving on and not looking back. Inner child work taught me that the parts of me that were hurt back then were still there, still waiting, still hoping someone would come. When I finally turned toward them instead of away from them, something shifted that I don't have words for. It was the work I didn't know I needed."

Fight, Flight, Freeze & Fawn — The Four Trauma Responses

Plain language: "The four ways your nervous system automatically tries to protect you when it senses danger — responses you learned long before you had words for them."

FIGHT — The nervous system responds by pushing back — anger, aggression, confrontation. In adult survivors this often shows up as rage, defensiveness, or conflict in relationships.

You might recognize this as: explosive anger, irritability, needing to be right, difficulty tolerating criticism.

FLIGHT — The nervous system responds by running — physically or emotionally. Shows up as workaholism, constant busyness, anxiety, avoidance, or leaving situations that feel unsafe before anything bad happens.

You might recognize this as: restlessness, always being busy, avoiding conflict, leaving relationships before they end.

FREEZE — When fight and flight aren't available, the nervous system shuts down. Freezing is not consent. It is not weakness. It is the nervous system doing the only thing left available to it.

You might recognize this as: going blank, inability to speak or move, shutting down emotionally, dissociation, numbness.

FAWN — The nervous system tries to neutralize the threat by becoming whatever the threat needs you to be. The fourth response — and the least talked about.

You might recognize this as: people-pleasing, over-apologising, inability to say no, putting everyone else first always.

Important: Most survivors don't have just one response — they have a combination, and different situations can trigger different ones. None of these are character flaws. They are patterns your nervous system learned to keep you safe.

What survivors often say:

"I thought freezing meant I consented. I thought fawning meant I was weak. Understanding these as automatic nervous system responses — things that happened to me, not choices I made — changed everything."

EMDR — Eye Movement Desensitization and Reprocessing

Plain language: "A therapy that helps your brain finally process memories it got stuck on — using bilateral stimulation to unlock what talking alone couldn't reach."

EMDR was developed by Dr. Francine Shapiro in the late 1980s following her observation that certain eye movements appeared to reduce the distress associated with traumatic memories. What began as a clinical curiosity has since become one of the most extensively researched and widely endorsed trauma treatments in the world — recommended by the World Health Organization, the American Psychological Association, the UK's National Institute for Health and Care Excellence, and many national health bodies globally.

The core theory behind EMDR draws on the Adaptive Information Processing model — the understanding that traumatic memories sometimes get frozen in the nervous system in a way that prevents normal processing. In ordinary experience, distressing events are processed, integrated, and filed away with context. Traumatic experiences — particularly those that were overwhelming, sudden, or involved a complete absence of safety — can become stuck. They remain active, unintegrated, and highly charged, which is why they continue to intrude into present experience through flashbacks, body sensations, emotional flooding, and triggers.

EMDR uses bilateral stimulation — most commonly guided side-to-side eye movements, though tapping and auditory tones are also used — while the person briefly focuses on a traumatic memory. The bilateral stimulation appears to mimic the natural processing that occurs during REM sleep, allowing the brain to metabolize the frozen material in a way that talking about it alone cannot always achieve.

A full course of EMDR typically involves eight phases:

• History and treatment planning — Understanding your history and identifying target memories

• Preparation — Building resources, establishing safety, explaining the process

• Assessment — Identifying the specific memory, associated beliefs, emotions, and body sensations

• Desensitization — Processing the memory with bilateral stimulation until distress reduces

• Installation — Strengthening a positive belief to replace the negative one associated with the memory

• Body scan — Checking for residual tension or disturbance in the body

• Closure — Returning to a state of equilibrium at the end of each session

• Re-evaluation — Reviewing progress at the start of each subsequent session

EMDR is particularly powerful for childhood trauma because it works directly with the emotional and somatic memory of an experience — not just the narrative. It can reach material that is pre-verbal, body-based, or simply beyond what language can hold. For many survivors, EMDR is the therapy that finally moved something that years of talking hadn't.

Sessions typically range from 6 to 12 or more depending on the complexity of the trauma. To find an EMDR-trained therapist, search Psychology Today using the 'EMDR' filter

Best for: trauma memories that feel stuck or unprocessed, PTSD, C-PTSD, sexual trauma, childhood abuse, memories with intense emotional charge, flashbacks, body-based trauma responses, situations where talk therapy alone hasn't been enough

What survivors often say:
"I was skeptical. The eye movements seemed almost too simple — too strange to be real. I'd spent years in talk therapy going over what happened and feeling like I was making progress and then falling back to the same place. EMDR moved something that nothing else had touched. It wasn't comfortable. There were sessions I walked out of feeling like I'd been through something enormous. But the weight I was carrying afterward was lighter. That's the only way I know how to describe it."

Somatic Therapy

Plain language: "Therapy that works through the body — because trauma isn't just a memory in your mind. It's a pattern held in your muscles, your breath, your posture, and your nervous system."

The word somatic comes from the Greek word soma, meaning body. Somatic therapy is an umbrella term for therapeutic approaches that recognize the body as a primary site of trauma storage and healing — not just a vehicle for the mind. Where traditional talk therapy works primarily with thoughts, narrative, and conscious memory, somatic therapy works with sensation, movement, breath, posture, and the autonomic nervous system.

The foundational insight of somatic therapy is captured in the title of Bessel van der Kolk's landmark book — The Body Keeps the Score. Trauma is not just a psychological event. It is a physiological one. When the nervous system experiences overwhelming threat, it responds with a cascade of physical changes — muscle tension, breath changes, heart rate elevation, the mobilization or immobilization of the entire body. When that response doesn't complete — when the threat ends before the body has discharged the survival energy it mobilized — that energy doesn't simply disappear. It gets held in the body, often for years or decades, as chronic tension, numbness, pain, or dysregulation.

Talk therapy can help a survivor understand what happened and build insight — but insight alone doesn't always release what the body is holding. A person can know cognitively that they are safe and still feel terrified. They can understand intellectually why they react a certain way and still be unable to stop the reaction. This is because the traumatic material lives below the level of language — in the brainstem, the autonomic nervous system, and the implicit body memory that operates faster than conscious thought.

Somatic therapy approaches this material directly. There are several distinct modalities under the somatic umbrella:

Somatic Experiencing (SE) — Developed by Peter Levine, SE works with the body's innate capacity to heal trauma by tracking sensation, completing interrupted survival responses, and gradually increasing the window of tolerance. It is gentle, titrated, and specifically designed to avoid retraumatization.

Sensorimotor Psychotherapy — Developed by Pat Ogden, this approach integrates somatic awareness with cognitive and emotional processing. It pays close attention to posture, gesture, movement, and physical impulses as pathways into traumatic material.

Trauma-Sensitive Yoga — A modified yoga practice specifically adapted for trauma survivors, focusing on interoceptive awareness (the ability to notice internal body sensations) rather than performance or flexibility. Developed at the Trauma Center in Boston and backed by clinical research.

Somatic EMDR — A combination of EMDR's bilateral stimulation with somatic tracking, bringing body awareness into the reprocessing work.

What all somatic approaches share is an orientation toward the body as a source of intelligence rather than an obstacle to overcome. Sensations, impulses, and physical responses are not symptoms to be managed — they are information to be listened to. Somatic therapy teaches people to develop a relationship with their own body — often for the first time — and to use that relationship as a pathway to healing what cognition alone cannot reach.

Somatic therapy is particularly valuable for survivors whose trauma is pre-verbal, body-based, or has been inadequately addressed by previous talk therapy. It is increasingly integrated into mainstream trauma treatment and is now considered a core component of comprehensive trauma care.

Best for: trauma stored in the body, dissociation, numbness, chronic tension or pain with no medical cause, freeze response, survivors who find talk therapy doesn't reach deep enough, body awareness work, nervous system regulation, pre-verbal trauma, later stages of trauma healing

What survivors often say:
"I'd talked about what happened for years. I understood it. I could explain it calmly to my therapist without feeling much at all — which, it turned out, was the problem. Somatic therapy went somewhere the talking never reached. There were sessions where I didn't say more than a few words. What moved was in my body — tension releasing, something shifting in my chest, a breath I'd been holding for thirty years. I didn't know healing could feel like that."

Window of Tolerance

Plain language: "The zone where you're activated enough to be present but calm enough to think — and the reason trauma makes that zone so much smaller than it should be."

The window of tolerance is a concept developed by neuropsychiatrist Dr. Dan Siegel to describe the optimal zone of nervous system arousal within which a person can function effectively — processing emotions, engaging with others, accessing memory, and making thoughtful decisions. Inside the window, you are present, regulated, and capable. Outside it, in either direction, functioning becomes significantly impaired.

The window has two edges:

The upper edge — Hyperarousal — Above the window, the nervous system is too activated. This is the fight-or-flight zone: anxiety, panic, rage, hypervigilance, racing thoughts, feeling overwhelmed, being flooded with emotion. The prefrontal cortex — the part of the brain responsible for rational thought, perspective, and decision-making — goes offline. Emotional reactions feel enormous and uncontrollable. The body is mobilized for danger that may not exist.

The lower edge — Hypoarousal — Below the window, the nervous system has collapsed into shutdown. This is the freeze and fawn zone: numbness, dissociation, emotional flatness, fatigue, disconnection, the sense of not being real or present. This is the nervous system's last resort when fight and flight are not available — playing dead, going away, becoming unreachable. The prefrontal cortex goes offline here too, but in the opposite direction — not flooded but absent.

In people who have experienced chronic childhood trauma, the window of tolerance is typically significantly narrowed. The nervous system has learned that the world is dangerous and unpredictable, and has calibrated accordingly — setting the trigger for both hyperarousal and hypoarousal much lower than in people with secure early attachment. Small stressors that others manage easily can push a trauma survivor out of their window entirely. This is not weakness. It is an accurate reflection of what the nervous system was trained to expect.

A narrowed window of tolerance explains many of the patterns that trauma survivors find most confusing and distressing about themselves — the intense reactions that feel disproportionate, the sudden shutdowns, the inability to access calm reasoning in moments of conflict, the exhaustion that comes from living so close to the edges all the time.

The goal of trauma therapy — particularly somatic and body-based approaches — is to gradually widen the window of tolerance. This happens not by forcing the nervous system to tolerate more than it can, but by building safety, developing regulatory skills, and incrementally expanding capacity through titrated exposure to manageable activation. Grounding techniques, breathing practices, mindfulness, and somatic work all contribute to widening the window over time. EMDR targets the specific memories that narrow it.

A widened window means more room — more capacity to feel without being overwhelmed, more capacity to engage with difficult material without shutting down, more capacity to be present in relationships without swinging between clinging and withdrawing.

Best for awareness: somatic therapy, grounding techniques, breathing practices, EMDR, mindfulness, nervous system regulation work, titrated trauma processing

What survivors often say:
"I was either completely overwhelmed or completely numb. There didn't seem to be a middle ground — no place where I could feel something without it taking over entirely, or feel nothing without disappearing. Understanding the window of tolerance was the first time someone gave me a map of what was happening. I wasn't broken. My window was just very small. And small windows can be made larger."

Attachment Styles

Plain language: Attachment Styles

"The pattern your nervous system learned for how to be close to other people — based on how safe, consistent, and responsive the people closest to you were when you were small."

Attachment theory was developed by psychiatrist John Bowlby in the mid-twentieth century and expanded by developmental psychologist Mary Ainsworth through her landmark Strange Situation experiments. The central insight is this: human beings are wired for connection, and the earliest experiences of connection — with primary caregivers in the first years of life — create a template that shapes every significant relationship that follows.

When a child's early attachment experiences are consistently safe, responsive, and attuned, they develop what is called a secure attachment style — an internal working model that says "I am loveable, other people are trustworthy, and relationships are safe." When early attachment experiences are inconsistent, frightening, absent, or harmful, one of three insecure attachment styles typically develops — each representing the nervous system's best adaptation to an imperfect caregiving environment.

The four main attachment styles:

Secure — Developed through consistent, responsive caregiving. Characterized by comfort with intimacy and interdependence, the ability to seek support when needed, and the capacity to regulate emotions within relationships. This is the goal of attachment healing — not a personality trait you either have or don't, but a state that can be earned through experience and therapy.

Anxious / Preoccupied — Developed when caregiving was inconsistent — sometimes available and responsive, sometimes not. The nervous system learns to escalate attachment behaviours — to cling, to protest, to monitor the relationship constantly — in an attempt to secure connection. In adulthood this shows up as fear of abandonment, intense need for reassurance, and difficulty self-soothing without a partner present.

Avoidant / Dismissing — Developed when caregiving was consistently emotionally unavailable or rejecting. The nervous system learns to suppress attachment needs — to become self-sufficient, to minimize the importance of connection, to avoid vulnerability. In adulthood this shows up as discomfort with closeness, difficulty asking for help, and a tendency to withdraw under stress.

Disorganized / Fearful — The most common attachment style in survivors of childhood abuse and neglect, and the most complex. Developed when the caregiver was both the source of comfort and the source of fear. The nervous system is caught in a fundamental paradox: the person it needs for safety is the same person who is dangerous. In adulthood this shows up as a simultaneous longing for and terror of closeness — approach and avoidance happening at the same time, often described as feeling like you want connection desperately but push people away when they get too close.

Attachment styles are not fixed. This is one of the most important things to understand. Research has consistently demonstrated that insecure attachment patterns can shift — through safe, consistent relationships, through therapy, and through the development of what is called earned security. The nervous system can learn, at any age, that connection is safe.

Best for awareness: attachment-focused therapy, IFS, EMDR targeting early relational trauma, couples therapy with an attachment focus, building secure relationships

What survivors often say:
"I kept doing the same thing in every relationship — either holding on so tight I scared people away, or disappearing before they could leave me first. I thought it was just who I was. Understanding attachment styles was like finally reading the instruction manual for myself. It didn't change everything overnight. But it gave me somewhere to start."

Gaslighting

Plain language: "When someone consistently makes you question your own memory, perception, or sanity — usually to avoid accountability, maintain control, or protect themselves from the consequences of their own behaviour."

The term gaslighting comes from the 1944 film Gaslight, in which a husband systematically manipulates his wife into doubting her own perceptions — including by secretly dimming the gas lights in their home and insisting she is imagining it. The film gave name to a form of psychological manipulation that had existed long before anyone had language for it — and that is particularly prevalent in abusive relationships, dysfunctional family systems, and the environments that produce childhood trauma.

Gaslighting works by attacking the target's relationship with their own reality. Rather than acknowledging hurtful or harmful behaviour, the gaslighter redirects the conversation toward the victim's perception of it — making the problem not what was done, but how the victim is responding to it. Over time, and particularly when gaslighting begins in childhood before a person has the developmental capacity to question the authority of the adults around them, it can profoundly damage the target's ability to trust their own experience.

Common gaslighting phrases and tactics include:

• "That never happened" — Flat denial of a real event

• "You're remembering it wrong" — Rewriting history

• "You're too sensitive" — Pathologizing a normal response to harmful behaviour

• "You're imagining things" — Attacking the target's perceptual accuracy

• "You're crazy" or "You're unstable" — Attacking the target's mental health and credibility

• "Nobody else has a problem with me" — Isolating the target and implying the problem lies with them

• "You always do this" — Shifting the narrative to the target's patterns rather than the gaslighter's behaviour

• "I was just joking — you can't take a joke" — Minimizing harmful behaviour and blaming the target for their response

For childhood trauma survivors, gaslighting is particularly damaging because children are entirely dependent on caregivers to help them make sense of reality. When the adults who are supposed to be the arbiters of truth are also the source of harm, the child has no reference point. They cannot hold onto their own experience when the person they need for survival insists that experience is wrong. This is how gaslighting creates the deep self-doubt, the chronic second-guessing, and the difficulty trusting one's own perceptions that so many trauma survivors carry into adulthood.

The effects of chronic gaslighting include: persistent self-doubt, difficulty making decisions, constant second-guessing of one's own memory and perception, apologizing excessively, feeling confused or disoriented in relationships, and a deep-seated belief that one's experience of reality cannot be trusted. In its most severe form, gaslighting can contribute to dissociation and derealization — the nervous system's attempt to cope with a reality that has been made fundamentally unstable.

Healing from gaslighting involves the slow and often painstaking work of rebuilding trust in one's own perceptions. This is done through therapy, through relationships with people who consistently validate rather than distort, through learning to recognize gaslighting patterns when they arise, and through the gradual accumulation of experiences in which one's own experience is treated as real and worthy of respect.

Best for awareness: trauma-informed therapy, IFS, narrative therapy, healthy relationships with consistent validation, learning to identify and name gaslighting when it occurs

What survivors often say:
"I spent decades wondering if I had made it all up. If I was too sensitive. If I was the problem. The doubt they planted was almost as damaging as what actually happened — because it meant I couldn't trust my own mind. Therapy helped me slowly build back that trust. But it took a long time. And it took someone consistently telling me: what you experienced was real. You didn't imagine it. You weren't crazy. You were a child trying to survive in a situation that should never have been yours to survive."