If depression remains untreated, then, like many other conditions it can get worse. According to Prof. Frank Schneider (President of the DGPPN, German Association of Psychiatry, Psychotherapy and Neurology): "Even when they symptoms are not pronounced or vary in their seriousness, those affected should not hesiatet to consult a doctor. People with relatively mild depression can continue to function quite well for some time. But they have to invest a great deal of energy in order to cope with their everyday life and run the risk of developing serious depression after a few weeks, or that the originally mild case of depression may become chronic. (Source: http://www.neurologen-und-psychiater-im-netz.de)
So there's a danger that symptoms of depression will not disappear, but could get worse. Depression can become chronic or long-lasting. Chronic depression can have negative consequences in many areas of the affected person's life, including in relationships, the social environment, mood and the ability to work. In the worst possible case, untreated depression can tragically lead to suicide. It's therefore important to act as soon as possible at the first sign of depressive symptoms.
If you are worried that you may be suffering from depression, you are advised to visit a doctor or therapist who will help you by testing you for depression. If you'd like some helpful notes on how to prepare for this visit, please click here.