A three-stage progressive pattern of nonspecific physiologic responses known as alarm, resistance, and exhaustion is based on

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Hans Selye's General Adaptation Syndrome describes responses to longer-term stress exposure. Selye described a three-stage progressive pattern of nonspecific physiologic responses, which he branded as alarm, resistance, and exhaustion. Walter Cannon was the first to describe a scientific physiological basis for an acute stress response. Cannon believed that when people feel physically well, emotionally centered, and personally secure, they are in a state of dynamic equilibrium or homeostasis. Stress disturbs homeostasis. Thomas Holmes and Richard Rahe developed a stress model that considered stressful life events such as marriage, divorce, death, and losing a job as stimuli that threaten or disrupt homeostasis. Lazarus and Folkman's transactional model of stress is one of the most widely used to explain stress responses. It is based on the premise of a dynamic relationship between a situation or circumstance in the environment (stressor) and the individual experiencing the stressor that accounts for its impact on a person.

A Three-Stage Progressive Pattern of Nonspecific Physiologic Responses Known as Alarm