We all have low moods from time to time. Usually the mood passes and we get back to our normal way of living. Low moods like these are not what doctors call depression. Instead they use the term to describe a more severe illness. No one symptom indicates whether you have just a low mood or what can be termed 'clinical depression'.
Many of the symptoms are similar; however, when you are depressed they are usually more intense and go on for longer. Depression is an illness that can be treated and you will feel better in time.
What is depression?
Causes of depression
Types of depression
What happens when you go to your GP?
Women and depression
Depression in young people
Grief and bereavement
Helping friends and family
Dr Kwame McKenzie is a psychiatrist at the Maudsley Hospital and Institute of Psychiatry, London. He is committed to improving the understanding of mental illness and has written over 200 articles, hosted a TV series and conducted numerous radio interviews on the subject.