Journal
PSYCHIATRIC CLINICS OF NORTH AMERICA
Volume 37, Issue 4, Pages 535-+Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.psc.2014.08.010
Keywords
Fear; PTSD; Stress; Extinction; Conditioning
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The most common pathologic manifestation of fear is posttraumatic stress disorder (PTSD). Developing PTSD is closely related with predisposing factors such as genes and early traumatic experiences. In PTSD, enhanced fear learning and poor extinction are common. Fear is manifested through autonomic responses and persistent memories of the traumatic event. These manifestations are related to stress responses modulated by the hypothalamic-pituitary-adrenal axis. This article evaluates the role of fear and stress in the course of PTSD. Findings on fear learning and extinction are presented in order to guide future treatments of patients with PTSD.
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