Seasonal affective disorder (SAD), also known as winter depression or winter blues, is a mood disorder in which people who have normal mental health throughout most of the year experience depressive symptoms in the winter or, less frequently, in the summer, repeatedly, year after year. The US National Library of Medicine notes that “some people experience a serious mood change when the seasons change. [ Wiki ]
This should explain why I’m extra bitchy and my sinusoidal mood’s been swinging like crazy nowadays. What the hell — I thought I was immune to this?