Overview
Depression is a common and serious mental health condition that goes far beyond feeling sad. It brings a lasting low mood and loss of interest in things once enjoyed, along with changes in sleep, appetite and energy, for weeks or longer. It is not a weakness or something a person can simply snap out of. It is very treatable — with talking therapy, lifestyle support and, when needed, medicines, most people recover.
Symptoms
- Persistent low mood or sadness most of the day
- Loss of interest or pleasure in usual activities
- Changes in sleep and appetite
- Low energy and difficulty concentrating
- Feelings of guilt, worthlessness or hopelessness
When to see a doctor
See a doctor or mental health professional if low mood or loss of interest lasts more than two weeks or affects daily life.
Emergency — call 108 or go to the nearest hospital
- Thoughts of suicide, self-harm, or feeling life is not worth living — seek help immediately, tell someone you trust or go to a hospital
Causes
A combination of genetics, brain chemistry, and stressful life events such as loss, illness or difficult circumstances.