There is a difference between having the blues and having clinical depression. Teresita Calero is a Psychotherapist at Baptist Health Care and Counseling. She explains that the blues are more like going through a transition after losing someone or something important to you.
She believes that the blues are more situational and will go away, but clinical depression refers to the person’s mood becoming affected and their inability to connect.
Martin Lopez, a Psychotherapist at the same institution, says that the blues can lead depression. However, it will usually stop after a period of time and things will get better.