The number of depressive episodes experienced also tends to increase over time. The high rate of relapse and increasing frequency of depressive episodes make some women feel like they have been depressed for long periods of times. Because of this, treatment for depression is necessary. It is also necessary to quickly manage any new depressive symptoms. Depression, like anxiety, is the result of some stressor.
Bodily changes occur.
Also, changes occur in thoughts, behaviors, and feelings. The same chain of brain events that result in a stress response and anxiety set the stage for depression. Once the stress response is well underway other chemicals called hormones are released to keep the stress response going. Remember, being able to launch a stress response when stressors are present is a good thing. In most people these hormones return to normal once the stressor passes.