Self assesments stop validating
Prevalence depends on the type of trauma (e.g., 13%-21% of motor vehicle accidents, 19% of assault, 20%-50% for rape or witnessing a mass shooting). If symptoms persist past 1 month; diagnosis is changed to Posttraumatic Stress Disorder.
Of 1084 consecutive admissions to 5 major trauma hospitals across Australia, 10% developed acute stress disorder (ASD) in the initial month after trauma.
This state may be followed either by further withdrawal from the surrounding situation (to the extent of a dissociative stupor - F44.2), or by agitation and over-activity (flight reaction or fugue).
Autonomic signs of panic anxiety (tachycardia, sweating, flushing) are commonly present.
If this is the case, the disorder should be classified as such.
Acute Stress Disorder causes significant distress or life impairment.
Symptoms typically begin immediately after the trauma, but persistence for at least 3 days and up to a month.
It is not due to a drug, medication, or general medical condition.
The amnesia is usually centred on traumatic events, such as accidents or unexpected bereavements, and is usually partial and selective.
Complete and generalized amnesia is rare, and is usually part of a fugue (F44.1).