Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

A major life influencing event that leads to intense stress so profound that it can contribute to the development or aggravation of an existing psychological disorder. A psycho social stressor might be the death of a loved one, divorce, losing one's home or even sudden, unexpected unemployment.

PSYCHOSOCIAL STRESSOR: "The particular psychosocial stressor for Margurite was the loss of her home through foreclosure."

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