Trauma- and Stressor-Related Disorders
Posttraumatic Stress Disorder
Posttraumatic Stress Disorder can occur after exposure to actual or threatened death, serious injury, or sexual violence. It includes persistent re-experiencing, avoidance, negative changes in thinking or mood, and increased arousal lasting more than a month.
Strong reactions immediately after a trauma are common and do not in themselves mean PTSD. The diagnosis depends on the type of exposure, the specific combination of symptoms, the duration and the functional effect. There are effective, specialised psychological treatments.
What Is Posttraumatic Stress Disorder?
Exposure may involve directly experiencing the event, witnessing it in person, learning that it happened to a close family member or friend, or repeated occupational exposure to traumatic details. When it involves the death of a loved one, the death must have been violent or accidental. Exposure via news, video or social media is not enough, unless it is part of professional duties. Difficult events that do not meet this criterion can cause severe distress or other disturbance and deserve care, but are not automatically called PTSD.
Key Features and Signs
Symptoms are organized into four groups and may appear differently by age:
- Intrusion: unwanted memories, nightmares, flashbacks, or strong emotional and physical reaction to reminders.
- Avoidance: trying to remove yourself from thoughts, feelings, people, places or activities that remind you of the event.
- Negative changes: guilt, shame, persistent negative beliefs, alienation, decreased interest or inability to recall an important aspect of the trauma.
- Arousal and reactivity: hypervigilance, intense startle, irritability, trouble sleeping or concentrating, and risky behaviour.
- Dissociative symptoms, such as depersonalization or derealization, in some people.
- In children, repetitive play with trauma themes, nightmares without recognizable content, or regression may be part of the presentation.
How It Is Diagnosed
The assessment is done safely and without requiring the person to recount all the details from the first meeting. Exposure, symptoms, duration, function and risk are examined.
- There is exposure that meets the DSM-5-TR specific trauma criterion, not just any stressor.
- For adults, adolescents, and children older than age 6, at least 1 intrusion symptom, 1 avoidance symptom, 2 negative alterations in cognition and mood, and 2 alterations in arousal and reactivity are required.
- The overall pattern lasts more than 1 month and causes significant distress or impairment in social, school, work, or other functioning.
- The presentation is not attributable to a substance, drug, or other medical condition. For children 6 years of age and younger, separate, developmentally adjusted criteria apply.
How It Can Affect Daily Life
Hypervigilance and poor sleep exhaust the body and affect memory, concentration and patience. Avoidance may remove the person from work, relationships, medical care, or places that are objectively safe. There may be use of alcohol or drugs for sleep or numbness, as well as depression, chronic pain, or self-injury. Reactions are not a weakness of character.
Risk and Protective Factors
Not everyone develops PTSD after a traumatic exposure. Risk is influenced by the nature, duration, and repetition of the event, previous experiences and mental health, injury, posttraumatic stressors, and available social and practical support. These are correlates, not certainties. Responsibility for violence or abuse lies with the perpetrator, not the person experiencing symptoms.
Similar or Co-occurring Conditions
The time since the event and the full pattern of symptoms are crucial:
- Acute Stress Disorder is diagnosed from 3 days to 1 month. After the month there is a reassessment; it does not automatically convert to PTSD.
- Adjustment Disorder can follow a variety of stressors when criteria for PTSD or another disorder are not met.
- Depression, panic, Generalized Anxiety Disorder, Obsessive-Compulsive Disorder, Prolonged Grief Disorder, and Dissociative Disorders may be similar or co-occur.
- Traumatic brain injury, pain, substances, and sleep problems can cause overlapping symptoms.
- Dissociative Identity Disorder or dissociative amnesia is assessed when identity discontinuity or autobiographical amnesia exceeds the PTSD picture.
Treatment and Support
Treatment is selected according to age, time since the traumatic event, current safety, preferences and co-occurring needs.
- Individual trauma-focused forms of cognitive-behavioural therapy help process memories, meanings, and avoidance in a structured, safe way.
- Eye Movement Desensitization and Reprocessing (EMDR) is an evidence-based option for many adults and is administered by a trained therapist.
- For children and adolescents, developmentally tailored trauma-focused interventions are preferred, with caregiver involvement when appropriate and safe.
- Medications can be discussed for adults in some cases, but do not automatically replace trauma-focused therapy and require medical supervision.
- Practical safety, stable sleep, social support, and treatment for depression, pain, or substance use are all part of comprehensive care.
- Routine psychologically focused debriefing after trauma is not recommended. Support should be voluntary, responsive to the person’s needs, and should not pressure them to recount the event.
When to Seek Help
Seek evaluation when symptoms persist, affect sleep, relationships, school, or work, or lead to avoidance, substances, or self-harm. You don't have to wait a month for support; the time limit is for a PTSD diagnosis, not eligibility for help. If the threat or abuse continues, the priority is real safety and access to appropriate services.
Frequently Asked Questions
Does every very difficult experience cause PTSD?
No. The DSM-5-TR defines a specific type of traumatic exposure and requires a specific combination of symptoms, duration, and functional impact. Other difficult experiences can also need serious support.
Must Acute Stress Disorder occur first?
No. PTSD can occur without a prior Acute Stress Disorder, and the acute disorder does not necessarily develop into PTSD.
Does delayed expression mean there were no symptoms?
No. It means that the full criteria are not met before at least six months have passed. Some symptoms may have appeared earlier.
Do I need to immediately describe every detail of the trauma?
No. Assessment and treatment must be done with safety, control and consent. The processing of memories occurs in a structured manner when there is appropriate preparation.