 State 53, did you know summertime sadness is a real phenomenon? WTOP's Matt Koufax talked to the local doctor about the causes and how to avoid it during the dog days this summer. Kaiser Permanente doctor Christina Lee says it has a name. We call that summer seasonal affective disorder or summer sad. Though more commonly thought of as something that affects people in winter, she says it can impact about 10% of people with seasonal depression issues in hotter weather.