Major depressive disorder

Major depressive disorder with seasonal pattern (option B) is not the diagnosis as there is presence of a psychosocial stressor (e.g., seasonal unemployment or school schedule). It is explicitly mentioned in the question that the patient always remains unemployed during the winter months which acts as the objective psychological stressor in this case.

Major depressive disorder with seasonal pattern refers to the onset and remission of major depressive episodes at specific times of the year. In most cases, the episodes begin in the fall or winter and remit in spring. Major depressive episodes that occur in a seasonal pattern are often characterized by prominent energy, hypersomnia, overeating, weight gain, and a craving for carbohydrates. This pattern of onset and remission of episodes must have occurred during at least a 2-year period, without any nonseasonal episodes during this period.