You probably know that some people — an estimated six percent — experience Seasonal Affective Disorder in the wintertime, a depressive state that scientists believe results from lack of sunlight. Lightbox treatment, which provides the missing rays, is popular and effective in reducing symptoms. So now that summer is finally on its way, SAD should be in hibernation for three months — right? Alas, it turns out there’s an even less common form of SAD that results from exposure to too much light and heat. And since there’s no such thing as a ‘dark box’, there’s no easy fix except prolonged periods of time in dark, air conditioned rooms. Have you experienced summertime SAD, or known anyone who has? How do you deal with the bright light and hot weather? Share your experiences in the comments.