Certain painful experiences are more likely to precede depressive episodes than others. And some forms of loss can trigger depression more quickly than previously realized
For a long time psychiatrists and psychologists have lumped such triggers together under rather vague umbrella terms, including "severe psychosocial stressors" and "stressful life events." In recent years, however, a few researchers have looked more carefully at the different kinds of events that provoke a depressive episode. The evidence they have collected so far argues for a more nuanced understanding of how stress interacts with individual susceptibility to depression, how quickly depression follows different types of stress, and how best to treat depression in these various situations.
Via Sandeep Gautam