Definition: The diathesis-stress model suggests that PTSD results from the interaction between individual vulnerability and traumatic experiences.

Highlight: PTSD rates vary significantly across racial and ethnic groups, with Black Americans showing higher prevalence rates.

Example: Women are more commonly diagnosed with PTSD despite men experiencing more potentially traumatic events, partly due to differences in trauma types and age of exposure.

Definition: PTSD requires exposure to actual or threatened death, serious injury, or sexual violence, either through direct experience, witnessing, or learning about it happening to close ones.

Highlight: Intrusion symptoms manifest as involuntary distressing memories, dreams, flashbacks, and psychological distress when exposed to trauma-related cues.

Example: A person might experience recurring nightmares about the traumatic event or have intense anxiety when encountering situations reminiscent of the trauma.