Depression is a widespread mental illness that causes intense feelings of sadness, hopelessness and personal emptiness. It can be brought on by stress, regret, trauma, loss or even a genetic predisposition to developing the disease. People who are suffering from depression often present with chronic fatigue or appetite changes. They may also experience social disassociation in an attempt to isolate themselves from other people.
Fortunately, mental health care is available to help people who suffer from depression. But despite the wide availability of treatments, less than half of depression sufferers seek help for their condition.