It was the subject of the Augusta Project begun by Mansell Pattison in 1980
It was the subject of the Augusta Project begun by Mansell Pattison in 1980, and an early version of it was observed in the 1860s and dubbed Da Costa's syndrome. Imaging studies on people suffering from it found an 8 percent decrease in hippocampal volume relative to controls, and it is unique in the DSM as being the only disorder that focuses not on personality features but on external circumstances. It is suspected that some of the "hysterical" woman treated by Joseph Breuer and Sigmund Freud might have been suffering from it due to sexual abuse. Most famously brought to national attention with returning Vietnam veterans, for ten points, identify this psychological anxiety disorder which may develop in response to extreme threats to a person's safety.
It was the subject of the Augusta Project begun by Mansell Pattison in 1980, and an early version of it was observed in the 1860s and dubbed Da Costa's syndrome.