Table 1.
Symptom criteria | DSM-5 | ICD-11 model 1 | ICD-11 model 2 |
---|---|---|---|
Intrusive memories | Re-experiencing | Re-experiencing a | |
Nightmares | Re-experiencing | Re-experiencing | Re-experiencing |
Flashbacks | Re-experiencing | Re-experiencing | Re-experiencing |
Psychological reactivity to reminders | Re-experiencing | ||
Physiological reactivity to reminders | Re-experiencing | ||
Avoidance of thoughts/feelings | Avoidance | Avoidance | Avoidance |
Avoidance of situations/people | Avoidance | Avoidance | Avoidance |
Trauma-related amnesia | Cognition and mood | ||
Negative beliefs | Cognition and mood | ||
Blame | Cognition and mood | ||
Pervasive negative emotional state | Cognition and mood | ||
Loss of interest | Cognition and mood | ||
Feeling detached | Cognition and mood | ||
Difficulty experiencing positive emotions | Cognition and mood | ||
Irritability or anger outbursts | Hyperarousal | ||
Reckless behaviour | Hyperarousal | ||
Hypervigilance | Hyperarousal | Hyperarousal | Hyperarousal |
Exaggerated startle response | Hyperarousal | Hyperarousal | Hyperarousal |
Difficulty concentrating | Hyperarousal | ||
Sleep difficulties | Hyperarousal |
PTSD, Post-traumatic stress disorder; DSM-5, Diagnostic and Statistical Manual for Mental Disorders, fifth edition; ICD-11, International Classification of Diseases-11.
For a re-experiencing symptom to be considered as being present, a score of 4 (most of the time) is required. For all other symptoms, a score of 3 or 4 is required. Diagnostic algorithms: DSM-5: ⩾2 re-experiencing, ⩾1 avoidance, ⩾2 cognition and mood, and ⩾2 hyperarousal; ICD-11 versions 1 and 2: ⩾1 re-experiencing, ⩾1 avoidance, and ⩾1 hyperarousal.