The depressed feeling occur when a person looses something or someone dear or due to disappointment. The feelings may continue to haunt the mind for a short period of time or it may extend long. How long it will continue depends upon the severity of the condition and the available support of the family to tackle this problem. In the same way clinical depression can be long or short period. The clinical depression does not remain forever and may end up naturally without any treatment after few weeks or months or it can even last around eight months.. But in most of the cases treatment is required, during treatment the patients feel they will never recover this is the way depression makes the patient think.

The guidance of the doctor and timely treatment is very essential to remove these disorders at an earliest but if it is left untreated it can even continue for years together. If it is a major depressive episode it depicts a set of symptoms which can last for more than two weeks or for months. Dysthymia a moderate or mild depression but very difficult to identify and being mild still may last for years if left untreated. The bipolar depression is distinguished as “ups” (periods of mania) where the person feels flamboyant and “downs” (periods of extreme depression). These phases in bipolar depression both change rapidly or slowly and can continue until and unless an effective treatment is found.