Seasonal affective disorder (SAD) is a seasonal pattern of recurrent major depressive episodes that most commonly occurs during autumn or winter and remits in spring. In some cases, SAD may occur in the summer with remission in the autumn-winter.2 It can be very disabling for patients, some of whom may require hospitalisation for SAD at some point.
This is a companion discussion topic for the original article at https://patient.info/doctor/mental-health/seasonal-affective-disorder-pro