Seasonal pattern refers to a specifier for a depressive episode in which the individual has varying symptoms according to time of year, with symptoms usually developing during the sa me months every year. Example: Seasonal affective disorder (SAD)
Other /More definition:
Seasonal pattern refers to a specifier for a depressive episode in which the individual has varying symptoms according to time of year, with symptoms usually developing during the same months every year.
Lexicon of Psychology - Terms, Treatments, Biographies,