Extract from NHS Choices

Seasonal Affective Disorder (SAD) is a type of depression that has a seasonal pattern. It is characterised by episodes of depression that recur at the same time each year.

SAD is sometimes known as ‘winter depression’ because the symptoms are more apparent during the winter.

As with other kinds of depression, two of the main symptoms of SAD are a low mood and a loss of interest in ordinary things. Other symptoms of SAD include:

• being less active
• putting on weight
• sleeping more

For more information please see the following articles:

NHS Choices – Seasonal Affective Disorder

Mind – Seasonal Affective Disorder

Wikipedia – Seasonal Affective Disorder

The SAD Association

Related posts:

1. Schizophrenia
2. Depression
3. Anxiety