 The summer blues. It's not just an expression, but as it turns out, it can be an actual medical condition. WTOP's Matt Kofack sat down with a local psychiatrist who says it's more common this time of year than you think. We call that summer seasonal affective disorder, or summer SAD. Dr. Christina Lee with Kaiser Permanente says seasonal depression is more commonly thought of as a winter phenomenon, but 10% of people with seasonal depression issues are actually more affected in weather like this.