HPA Axis

Body of Knowledge of Psychotraumatology

Adaptations of Trauma

Traumatic stress reactions are increasingly understood as adaptive responses to abnormal threat, rather than arbitrary “symptoms.” In the face of overwhelming events, the brain and body employ survival-based coping mechanisms that allow the individual to endure and function (Van der Kolk, 2014). These adaptations occur on multiple levels – neurobiological, behavioral, and physiological – and

Neurobiology of Trauma

Applying Neurobiology Principles to Trauma Treatment

Rationale for Neurobiologically-Informed Therapy Understanding trauma as a neurobiological condition offers profound implications for therapeutic practice. First, it allows clinicians to reframe trauma-related symptoms not as signs of character pathology or weakness, but as predictable consequences of disrupted brain-body systems (van der Kolk, 2014). This reframing is inherently validating: survivors can begin to understand that

Neurobiology of Trauma

Hypothalamic–Pituitary–Adrenal (HPA) Axis

Trauma also provokes enduring changes in the body’s primary stress circuitry, the HPA axis. The HPA axis governs the release of stress hormones (like cortisol and adrenaline) in response to threat. In acute trauma, the HPA axis kicks into high gear – the hypothalamus releases corticotropin-releasing hormone (CRH), the pituitary releases ACTH, and the adrenal

Neurobiology of Trauma

Neurobiological Profiles: PTSD vs. Complex Trauma

Post-Traumatic Stress Disorder (PTSD) – Single-Event Trauma Response PTSD, typically associated with exposure to a single traumatic incident, presents a relatively consistent neurobiological profile. Neuroimaging studies indicate that individuals with PTSD exhibit heightened amygdala activation, reduced hippocampal volume, and diminished activity in the medial prefrontal cortex (mPFC)—regions essential for emotional regulation and contextual memory (Rauch

Trauma

Developmental Trauma

Trauma Experienced During Key Developmental Stages (Childhood Neglect, Emotional or Physical Abuse) Developmental trauma encompasses prolonged, repeated, or severe traumatic experiences occurring during critical early developmental periods—particularly in infancy, childhood, or adolescence. Unlike single-event trauma, developmental trauma is inherently interpersonal, typically involving caregivers or other trusted individuals who are responsible for nurturing, safety, and emotional

Trauma

Intrauterine & Pre‑Verbal Trauma

Defining the Concept Intrauterine trauma refers to stressors experienced prenatally—such as maternal stress, emotional distress, substance exposure, or prenatal medical complications—that can affect fetal development. Pre‑verbal trauma occurs before the acquisition of language, including birth trauma, early neglect, or abuse, which profoundly impacts implicit memory systems. Both operate outside conscious awareness and are carried in