Trauma-related risk factors for PTSD
Man made rather than natural events Prolonged exposure Perceived threat to life Grotesqueness Personally relevant e.g. death of family member
What are the psychological reactions after trauma?
Depression Grief reactions Panic attacks and agoraphobia Alcohol/drug dependence Brief hypomania Specific phobias
What are the 2 main brain areas involved in PTSD?
Hippocampus
Amygdala
What are the serum cortisol levels like in PTSD?
Low
Brain changes in PTSD
Activity shifts to brainstem Hippocampal atrophy Increased activity of amygdala and limbic system Deactivation of broca's area Right-hemispheric lateralisation