Depression is a mood disorder characterised by extreme sadness.
To be diagnosed with major depression, according to the DSM, an individual must experience at least 5 symptoms from a list, including one of depressed mood and/or loss of interest or pleasure in most activities, nearly every day for at least two weeks
Change in Activity: Reduced energy levels leading to fatigue, lethargy, and inactivity. In some cases, psychomotor agitation may occur.
Change in Eating and Sleeping Patterns: Changes in appetite, weight gain or loss, insomnia, or excessive sleeping. Eating and sleeping behaviours are disrupted by depression.
Social Impairment: Reduced levels of social interaction with friends and relations