Clinical Vignette
Patient: "Ms. E," 29-year-old social worker, self-referred reporting nightmares, emotional numbing, hypervigilance, and 'losing time' episodes that she relates to childhood sexual abuse.
Chief Concern: "I was sexually abused by my stepfather from ages 7 to 14. I thought I was over it, but in the past year the nightmares have come back, I can't trust anyone, and sometimes I 'lose time' — I'll be in one place and suddenly I'm somewhere else with no memory of how I got there."
History of Present Illness: Ms. E experienced repeated sexual abuse by her stepfather from ages 7-14. She disclosed to her mother at age 14; her mother divorced the stepfather, and Ms. E received 6 months of therapy. She functioned adequately through college and graduate school, pursuing social work 'to help kids like me.' In the past year, following assignment to a child protective services unit, her symptoms have intensified: recurrent nightmares of the abuse (3-5x/week), intrusive memories triggered by case files describing child abuse, emotional numbing ('I feel nothing during the day, then everything at night'), hypervigilance (scans every room for exits, sits with back to wall), startle response (jumps at unexpected sounds), difficulty trusting colleagues and romantic partners, chronic shame ('I feel permanently damaged'), and dissociative episodes (2-3x/month, lasting minutes to hours, where she 'loses time' or feels detached from her body, as if 'watching myself from outside'). She avoids: media depicting abuse, intimate physical contact, and specific locations that remind her of childhood home. She uses alcohol 2-3 nights/week 'to stop the nightmares.'
Past Psychiatric History: 6 months of therapy at age 14-15 (supportive counseling). No medication trials.
Family History: Mother: depression. Biological father: unknown.
Mental Status Exam: Alert, vigilant (scans room, sits near door). Speech measured. Mood 'on guard.' Affect constricted (limited emotional range). During discussion of childhood events, became detached (fixed stare, slower speech, appeared dissociated for approximately 30 seconds before reorienting). No psychotic symptoms. Denies current suicidal ideation. Reports passive SI 'sometimes, when the nightmares are worst.' Cognition intact.
Step 1: PTSD DSM-5-TR Criteria
Criterion A: Exposure to actual or threatened death, serious injury, or sexual violence.
Repeated childhood sexual abuse (ages 7-14). Qualifies under: direct experience of sexual violence. MET.
Criterion B: Intrusion symptoms (≥1): (1) intrusive memories, (2) nightmares, (3) dissociative reactions (flashbacks), (4) psychological distress at reminders, (5) physiological reactivity to reminders.
(1) Intrusive memories triggered by CPS case files. (2) Recurring nightmares 3-5x/week. (3) Dissociative episodes ('losing time'). (4) Distress when reading abuse case files. 4 of 5 intrusion symptoms present. MET (4/5).
Criterion C: Avoidance (≥1): (1) avoidance of distressing memories/thoughts/feelings, (2) avoidance of external reminders.
(1) Uses alcohol to suppress nightmares and memories. (2) Avoids abuse-depicting media, intimate physical contact, childhood-related locations. Both avoidance criteria present. MET (2/2).
Criterion D: Negative cognitions and mood (≥2 of 7): persistent negative beliefs, distorted blame, pervasive negative emotion, diminished interest, detachment, inability to experience positive emotions, persistent inability to remember aspects of trauma.
Chronic shame ('permanently damaged'). Difficulty trusting others. Emotional numbing ('feel nothing during the day'). Diminished interest in previously enjoyed activities. 4 of 7 present. MET (4/7).
Criterion E: Arousal and reactivity (≥2 of 6): irritable behavior, reckless/self-destructive, hypervigilance, exaggerated startle, concentration problems, sleep disturbance.
Hypervigilance (scans rooms, sits near exits). Exaggerated startle response. Sleep disturbance (nightmares). Self-destructive (alcohol use to cope). 4 of 6 present. MET (4/6).
Criterion F: Duration >1 month.
Current symptom exacerbation: 1 year. Trauma history: 22 years. MET.
Criterion G: Clinically significant distress or impairment.
Impaired work (difficulty with CPS cases), interpersonal difficulties (trust issues), coping through alcohol, dissociative episodes. MET.
Step 2: Dissociative Subtype and Complex Trauma Features
DSM-5-TR includes a dissociative subtype specifier for PTSD when depersonalization or derealization is present:
Depersonalization
'Watching myself from outside' — feeling detached from one's own body or mental processes. PRESENT.
Derealization
Not prominently described. NOT CLEARLY PRESENT.
Dissociative subtype specifier
Depersonalization is present during dissociative episodes. Specifier applies. DISSOCIATIVE SUBTYPE APPLIES.
Complex Trauma Considerations
Ms. E's presentation includes features associated with prolonged interpersonal trauma (complex PTSD features): chronic shame, interpersonal distrust, affect dysregulation (numbing alternating with emotional flooding), and dissociation. While DSM-5-TR does not include a separate 'Complex PTSD' diagnosis, ICD-11 does. Her treatment requires trauma-focused therapy adapted for complex trauma presentations.
Diagnostic Formulation
Diagnostic Conclusion
PTSD, with Dissociative Symptoms (Depersonalization) (F43.10): All 7 DSM-5-TR criteria met across all clusters. Criterion A: childhood sexual abuse. Intrusion (4/5), avoidance (2/2), negative cognitions (4/7), arousal (4/6). Duration >1 month. Functional impairment. Dissociative subtype specifier. Complex trauma features present (chronic shame, interpersonal difficulty, affect dysregulation). Treatment: phased approach — (1) stabilization and safety (address alcohol use, grounding techniques for dissociation), (2) trauma processing (CPT or PE adapted for complex trauma), (3) reconnection (interpersonal skill building, meaning-making).
Teaching Points
- PTSD from prolonged interpersonal trauma (childhood abuse) often presents with additional features beyond the DSM-5-TR criteria: chronic shame, interpersonal distrust, altered self-perception ('permanently damaged'), and dissociative symptoms. ICD-11 recognizes these as Complex PTSD. DSM-5-TR captures some features through the dissociative subtype specifier.
- The dissociative subtype of PTSD (depersonalization or derealization) is clinically important because it may require modified treatment. Patients with prominent dissociation may need stabilization and grounding work before initiating intensive trauma processing (CPT or PE). Starting trauma processing prematurely can worsen dissociation.
- Trauma reactivation through occupational exposure is a recognized phenomenon. Ms. E's symptom exacerbation upon assignment to a child protective services unit illustrates how professional roles involving vicarious trauma can reactivate personal trauma histories. Clinicians working in trauma-adjacent fields require their own support systems.
- Alcohol use in PTSD is functionally avoidant: it suppresses nightmares and intrusive memories in the short term but maintains the disorder by preventing emotional processing. Alcohol use should be addressed concurrently with PTSD treatment, not treated sequentially.
- The phased treatment model for complex trauma (Herman, 1992) involves three stages: (1) Safety and Stabilization (establishing safety, developing coping skills, building therapeutic alliance), (2) Trauma Processing (systematic processing of traumatic memories using evidence-based approaches), and (3) Reconnection (rebuilding relationships, integrating the trauma narrative, establishing future orientation). Skipping Phase 1 is associated with treatment dropout and clinical deterioration.