<unk> , or post-traumatic stress disorder, is a psychiatric disorder characterized by intrusive thoughts and memories, dreams, or flashbacks of the event; avoidance of people, places, and activities that remind the individual of the event; ongoing negative beliefs about oneself or the world, mood changes, and persistent feelings of anger, guilt, or fear; alterations in arousal such as increased irritability, angry outbursts, being hypervigilant, or having difficulty with concentration and sleep.<unk>  is commonly treated with various types of psychotherapy, pharmacotherapy and/or biological interventions. Exposure to trauma induces an intense amount of stress as a result of an individual directly or indirectly experiencing some type of threat, also referred to as a Potentially Traumatic Experience (PTE). PTEs can include—but are not limited to—sexual violence, physical abuse, unexpected death of a loved one, witnessing another person badly hurt, exposure to natural disaster, being a victim of a serious crime, car accident, combat, interpersonal violence and many other stressful experiences. PTEs can also include learning that a traumatic event occurred to another person or witnessing the traumatic event; an individual does not have to experience the event themselves to develop post-traumatic stress disorder <unk> . PTEs are labeled as such because not everyone who experiences one or more of the events listed will develop<unk> . However,<unk>  is estimated to develop in about 4% of individuals who experience some type of traumatic experience. Approximately 8% of adults the United States (U. S.) population will have<unk>  at some point in their lives. That means about 8 million U.S. adults have<unk>  during a given year, which is only a small portion of individuals who experience traumatic events. Biological stress responses can be adaptive at the time of the traumatic event, but prolonged biological stress responses can lead to impairing symptoms known as<unk> .
Treatments for PTSD
Psychological therapies for dementia
Suicide intervention
Self-help groups for mental health
Early intervention in psychosis
Treatment of bipolar disorder
Psychosocial treatment of needle phobia in children
Low-threshold treatment programs