Psychiatric trauma is essentially a normal response to an extreme event. It involves the creation of emotional memories about the distressful event that are stored in structures deep within the brain. In general, it is believed that the more direct the exposure to the traumatic event, the higher the risk for emotional harm.
In a school shooting, for example, the student who is injured probably will be most severely affected emotionally; and the student who sees a classmate shot, even killed, is likely to be more emotionally affected than the student who was in another part of the school when the violence occurred. But even second-hand exposure to violence can be traumatic. For this reason, all children and adolescents exposed to violence or a disaster, even if only through graphic media reports, should be watched for signs of psychiatric trauma. The same applies to adults.