It’s fall, and many students have left for college for the first time, starting a new and exciting stage of life. But sometimes this event triggers sadness in the parents left behind. “Empty nest syndrome”is a feeling of loss, sadness and bewilderment stemming from a child, especially the last “chick,” leaving home, said Dr. Madhukar Trivedi, associate professor of psychiatry at UT Southwestern Medical Center at Dallas. This may sometimes lead to a bad case of the blues. If these feelings persist for several months without relief, Trivedi recommends consulting a family physician or therapist. It’s possible for a parent to develop a major case of depression during this time.