A person may be diagnosed as having an episode of major depression if he experiences five or more of the following symptoms for two weeks or longer.
Persons with depression may, in some cases, entertain delusions (false unshakeable beliefs) usually involving any of the three themes, namely, guilt, ill health or poverty. These beliefs cannot be reasoned away and are not shared by others in the family or social circle.
Persons who are depressed sometimes report hearing voices scolding them, telling them they are useless and that they should go and die. Worse still, the voices may also tell them to commit suicide.