Depression causes a persistent feeling of sadness and loss of interest that is more than just a case of the blues. It affects how you feel, think and behave and can lead to a variety of emotional and physical problems. But don't get discouraged. Depression can be managed and treated with talk therapy, medication, or a combination of both.
It is important to remember that we all experience some of these symptoms from time to time, and it may not necessarily mean you're depressed. Equally, not everyone who is experiencing depression will experience all of these symptoms.