Stress Essay

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Stress is a term in psychology and biology, borrowed from physics and engineering and first used in the biological context in the 1930s, which has in more recent decades become commonly used in popular parlance. It refers to the consequence of the failure of an organism – human or animal – to respond adequately to mental, emotional or physical demands, whether actual or imagined.[1] Signs of stress may be cognitive, emotional, physical or behavioral. Signs include poor judgment, a general negative outlook,[citation needed] excessive worrying, moodiness, irritability, agitation, inability to relax, feeling lonely, isolated or depressed, aches and pains, diarrhea or constipation, nausea, dizziness, chest pain, rapid heartbeat, eating too much or not enough, sleeping too much or not enough, social withdrawal, procrastination or neglect of responsibilities, increased alcohol, nicotine or drug consumption, and nervous habits such as pacing about, nail-biting and neck pains. Contents [hide] 1 Origin and terminology 2 Models 2.1 General Adaptation Syndrome 2.2 Selye: eustress and distress 2.3 Lazarus: cognitive appraisal model 3 Neurochemistry and physiology 3.1 Impact on disease 4 Common sources 5 Stress tests 6 Adaptation 7 History and usage 8 Diagnosis 9 See also 10 References 10.1 Notes 10.2 Bibliography 11 External links [edit] Origin and terminology The term stress was first employed in a biological context by the endocrinologist Hans Selye in the 1930s.[2] He later[when?] broadened and popularized the concept to include inadequate physiological response to any demand. In his usage stress refers to a condition and stressor to the stimulus causing it. It covers a wide range of phenomena, from mild irritation to drastic dysfunction that may cause

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