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The term stress was first fond by the endocrinologist Hans Selye in the 1930s to identify physiological responses in laboratory animals
- He later broadened and popularized the notion to include the perceptions and responses of humans trying to adapt to the challenges of everyday Stress Balls life
- Stress, in Selye's terminology, refers to the boomerang of the organism, and stressor to the perceived threat.
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Its psychological uses are frequently metaphorical rather than literal, familiar with as a catch-all for perceived difficulties in life
- It also became a euphemism, a design of referring to problems and eliciting sympathy without being explicitly confessional, just "stressed out"
- It covers a immeasurable range of phenomena from mild irritation to the kind of severe problems that might crop in a de facto breakdown of health
- In faddy usage almost any chance or situation between these extremes could be described as stressful. The most extreme events and reactions may elicit the diagnosis of Posttraumatic stress disorder.
