Depression

Question 1

Symptoms

Answer 1

At least 5/9 everyday for 2 weeks
One must be low mood & loss of pleasure
1) low mood/irritable (indicated in subjective report/observations made by others)
2) lack of interest or pleasure
3) significant weight change in appetite
4) change in sleep (insomnia/hypersomnia)
5) change in activity
6) fatigue or loss of energy
7) guilt/worthlessness
8) lack of concentration/indecisiveness
9) suicidality

Question 2

Features

Answer 2

Most common mental illness 1/5 (BPS 2013)
7-12% population every year (the office for national statistics psychiatric morbidity report 2001)
DSM estimates 7% in US (varies in age range)
Moussavi et al (2007) said 15% of industrialised nations
Effects women more than men 2:1 (young et al 1990)