In the ups and down of life everyone sometime or other feels low and dejected however this feeling comes and goes within couple of days. However if this feeling interferes with daily routine it becomes depressive disorder and cause pain for both person and their loved ones. Depression is a strong mood involving sadness, discouragement, despair, or hopelessness that lasts for weeks, months, or even longer. Depression is a common but serious illness, and when you have depression, nothing is more important than getting effective treatment. We have already discussion depression previously and some useful information and links can be found here.
Reasons of Depression. There is no single known cause of depression. Rather, it likely results from a combination of genetic, biochemical, environmental, and psychological factors.