Understanding Trauma

PART I: Types of Trauma

Trauma can be classified in multiple ways, including by duration, context, and cause:

A. By Duration or Exposure

Acute Trauma: A single, overwhelming event (e.g., a car accident, assault).
Chronic Trauma: Repeated and prolonged events (e.g., domestic violence, childhood abuse).
Complex Trauma: Multiple, interpersonal traumas, especially in early development, often involving caregivers.
Developmental Trauma: Trauma occurring during critical childhood developmental stages.
Secondary/Vicarious Trauma: Exposure to others’ trauma (common in therapists, first responders).
Intergenerational/Transgenerational Trauma: Trauma passed through family systems and generations (e.g., descendants of genocide survivors).
Historical/Collective Trauma: Trauma experienced by a cultural, racial, ethnic, or national group (e.g., colonialism, slavery, war).
Medical Trauma: Trauma due to medical procedures or health crises (e.g., ICU stays, cancer treatment).
Environmental/Disaster Trauma: Resulting from natural disasters or large-scale environmental events (e.g., hurricanes, wildfires).
Institutional Trauma: Harm caused by systems (e.g., schools, churches, prisons, immigration systems).
Terrorism/War Trauma: Trauma experienced due to war, combat, or terrorist activity.

PART II: Evidence-Based Therapeutic Modalities for Trauma

Each modality targets different aspects of trauma, from physiological dysregulation to cognitive distortions and relational repair.

1. Cognitive & Exposure-Based Therapies

Modality: Trauma-Focused Cognitive Behavioral Therapy (TF-CBT)

Description: Combines CBT with trauma-sensitive interventions. Includes psychoeducation, relaxation, cognitive processing, and trauma narration.

Best For: Children and adolescents

Modality: Prolonged Exposure Therapy (PE)

Description: Clients repeatedly revisit trauma memories in a safe setting to reduce avoidance and fear.

Best For: PTSD, particularly adult trauma

Modality: Cognitive Processing Therapy (CPT)

Description: Focuses on challenging and modifying unhelpful trauma-related beliefs.

Best For: PTSD, combat trauma, assault

Modality: Narrative Exposure Therapy (NET)

Description: Builds a chronological narrative of one’s life, integrating trauma memories.

Best For: Refugees, multiple traumas

2. Somatic & Body-Based Therapies

Modality: Sensorimotor Psychotherapy

Description: Integrates somatic and emotional processing with cognitive awareness.

Best For: Complex/developmental trauma

Modality: Somatic Experiencing (SE)

Description: Works with nervous system regulation by focusing on body sensations and releasing stuck trauma energy.

Best For: Acute, chronic, or shock trauma

Modality: Brainspotting (EMDR / memory consolidation category)

Description: Uses bilateral stimulation and eye position to help reprocess traumatic memories.

Best For: PTSD, phobias, single-incident trauma

3. Attachment-Based & Relational Approaches

Modality: Internal Family Systems (IFS)

Description: Treats the internal system of “parts” (e.g., exiles, protectors) within a person.

Best For: Complex trauma, dissociation

Modality: Attachment-Based Therapy

Description: Strengthens emotional bonds and secure attachment, often by healing early relational trauma.

Best For: Childhood and relational trauma

Modality: Dyadic Developmental Psychotherapy (DDP)

Description: Focuses on creating safety in caregiver-child relationships, often using co-regulation.

Best For: Children in foster/adoptive care

Modality: Relational-Cultural Therapy

Description: Emphasizes healing through mutuality, connection, and understanding power and oppression.

Best For: Relational trauma, marginalized identities

4. Mindfulness & Neuroscience-Informed Approaches

Modality: Mindfulness-Based Stress Reduction (MBSR)

Description: Uses meditation and body awareness to reduce reactivity.

Best For: Anxiety, somatic distress, vicarious trauma

Modality: Neurofeedback

Description: Uses EEG technology to help regulate brain function and stress response.

PTSD, complex trauma, developmental trauma

Modality: Polyvagal-Informed Therapy

Description: Uses Stephen Porges’ Polyvagal Theory to regulate the nervous system via vagus nerve pathways.

Best For: Dysregulation, anxiety, freeze states

5. Creative & Experiential Therapies

Modality: Art Therapy

Description: Uses visual expression to explore and process trauma nonverbally.

Best For: Children, preverbal trauma, dissociation

Modality: Music Therapy

Description: Uses sound and rhythm for emotional regulation and trauma processing.

Best For: Somatic trauma, adolescents

Modality: Drama Therapy / Psychodrama

Description: Uses role play and enactment to explore trauma narratives.

Best For: Complex trauma, grief

Modality: Play Therapy

Therapeutic play allows children to express trauma safely.

Best For: Young children, developmental trauma

Modality: Equine-Assisted Psychotherapy

Description: Builds regulation and trust through interactions with horses.

Best For: Attachment trauma, emotional regulation

6. Group & Community-Based Interventions

Modality: Seeking Safety

Description: Focuses on trauma and substance use by emphasizing coping skills and safety.

Best For: PTSD with co-occurring addiction

Modality: Trauma Recovery & Empowerment Model (TREM)

Description: Group-based, gender-responsive model for trauma survivors.

Best For: Interpersonal trauma, women’s groups

Modality: Community Resilience Models

Description: Promote collective healing and community-level nervous system regulation.

Best For: Collective and intergenerational trauma

PART III: Phases of Trauma Treatment

Most trauma-informed therapies follow a three-phase model (Herman, 1992):

Safety & Stabilization

Psychoeducation (e.g., Window of Tolerance, nervous system)
Coping skills, emotional regulation
Creating safety in the therapeutic relationship

Trauma Processing

Processing traumatic memories (through narrative, somatic, or exposure techniques)
Identifying distorted beliefs and triggers
Reprocessing and integration

Reintegration & Growth

Reconnecting with values, identity, and community
Enhancing autonomy and agency
Post-traumatic growth, relational repair

The Window of Tolerance is a foundational concept in trauma-informed therapy, originally developed by Dr. Dan Siegel. It refers to the optimal zone of arousal in which a person is able to function and respond to stimuli effectively—emotionally regulated, engaged, and present.

What Is the Window of Tolerance?

Think of it like a “zone” where a person’s nervous system is balanced. Within this window, a person can:
Manage daily stress
Engage socially
Reflect and make decisions
Feel a range of emotions without becoming overwhelmed
When inside the window, people are:
Calm
Focused
Emotionally regulated
Able to learn, connect, and respond effectively

Above the Window: Hyperarousal

Fight or Flight State

The nervous system is overactivated.

Symptoms include:

Anxiety or panic
Anger or irritability
Racing thoughts
Hypervigilance
Restlessness
Emotional flooding

Below the Window: Hypoarousal

Freeze or Shutdown State

The nervous system is underactivated.

Symptoms include:

Numbness or emptiness
Dissociation or depersonalization
Low energy, fatigue
Depression

Feeling disconnected from body or emotions:

Trauma & the Window of Tolerance

People with trauma histories often have a narrower window, meaning they may swing into hyperarousal or hypoarousal more quickly and with less external provocation.

How Therapy Expands the Window

Evidence-based trauma therapies help expand this window so individuals can:

Tolerate distress without shutting down or overreacting

Stay connected and grounded in the present

Learn to regulate their nervous systems

Tools therapists use include:

Cognitive restructuring
Grounding techniques
Somatic practices (e.g., breathwork, movement)
Mindfulness
IFS unburdening
Resourcing (connecting to safe internal/external images or memories)
Polyvagal-informed techniques (e.g., vagal toning, co-regulation)
Psychoeducation about nervous system function