PTSD

Posttraumatic stress disorder (PTSD) is a psychiatric disorder that may occur in people who have experienced or witnessed a traumatic event such as a natural disaster, a serious accident, a terrorist act, war/combat, or rape or who have been threatened with death, sexual violence or serious injury.
Acute Stress Disorder
Acute stress disorder occurs in reaction to a traumatic event, just as PTSD does, and the symptoms are similar. However, the symptoms occur between three days and one month after the event.
Adjustment Disorder
Adjustment disorder occurs in response to a stressful life event (or events). The emotional or behavioral symptoms a person experiences in response to the stressor are generally more severe or more intense than what would be reasonably expected for the type of event that occurred.
Reactive Attachment Disorder
Reactive attachment disorder occurs in children who have experienced severe social neglect or deprivation during their first years of life. It can occur when children lack the basic emotional needs for comfort, stimulation and affection, or when repeated changes in caregivers (such as frequent foster care changes) prevent them from forming stable attachments.