Keegan is a police officer. She was recently placed on administrative leave because she was shot during an armed robbery. Since the shooting, she can't stop thinking about how it felt to be shot, she is often angry with her husband, she jumps when she hears a loud noise, and she takes a 15-minute detour when driving home to avoid the neighborhood where it happened.
Keegan probably suffered from ________.

A) physiological stressors related to her shooting
B) posttraumatic stress disorder
C) prolonged exposure to cortisol
D) the exhaustion stage of the general adaptation syndrome

Post traumatic stress disorder or PTSD is a disorder triggered by a traumatic experience. It is characterized by the exposure to a near death experience or mayor lesion, for example, according to the DSM-5.

Symptoms include intrusion in the form of thoughts which are constant and involuntary, recurrent dreams, dissociative reactions and psychological discomfort, amongst others.

In this case, Keegan was shot and she is having intrusive thoughts about the experience and what it felt like. This is affecting her stress levels, making her angry and jumpy at external stimulus as well as wanting to avoid the scene where it happened.