A loss of interest and enjoyment in everyday life, with increased tiredness and reduced activity.
Three main grades
mild, moderate and severe
Two are generally present for a diagnosis:
lowered mood, reduction in energy, reduction in capacity for enjoyment, tiredness, disturbed sleep, diminished appetite, reduction of self-esteem, waking up hours before normal, weight loss, and loss of libido. Between 4-10% of people will experience depression in their lifetime.