What is seasonal affective disorder?

It is common for changing seasons, weather and temperatures to affect people’s comfort, mood, energy levels, sleeping patterns and appetite. If you experience a prolonged period of low mood returning at the same time of year, that is impacting on your daily life, then you might have Seasonal Affective Disorder (SAD).  

SAD is a type of depression which occurs repeatedly at specific times of the year – typically autumn and winter, but some experience it in summer.