Introduction
Triphasic pattern of nonspecific physiological responses to injury comprising of an initial alarm phase, followed by a stage of resistance/adaptation, leading eventually to a stage of exhaustion and death.

History:
According to many stress researchers, as well as historians, modern biological formulations of stress can be traced back to a brief and rather speculative article written by the Austrian-born Hungarian scientist Hans Selye (1907–82) in 1936. The article set out what appeared to be a characteristic triphasic pattern of nonspecific physiological responses to injury: the “general adaptation syndrome” comprised an initial alarm phase that was followed by a stage of resistance or adaptation, leading eventually to a stage of exhaustion and death.