Answer:
Carol finds she is no longer interested in things she used to do, is sad most of the time, and thinks she is a terrrible person. Addiotionally, she has recently lost a lot of weight and doesn't sleep very much. Carol's behavior would be diagnosed as experiencing a "mood disorder".
Explanation:
Mood disorders are conditions in which mental health is disturbed by not experiencing a regular mood cycle and state. They are considered diseases and psychologic disorders under DSM-V which marks the most objective classification of psychological conditions. Furthermore, Mood disorders are spotted when a subject's life is affected emotionally, behaviorally and socially. They require psychological treatment as soon as possible because even though they are not dangerous they are the first step of a dangerous disorder.
