Different causes and symptoms. According to the inquiry of Sanjiu Health Network:

1, different reasons: depression is caused by long-term stress and mental stress, and depression is caused by excessive mental stress and mental stress.

2. Symptoms are different: depression can lead to depression, loss of interest, anxiety, mental retardation, attention disorder and other symptoms, as well as self-blame and suicidal tendencies. Melancholy can lead to depression, loss of interest, anxiety, mental retardation, attention disorder and other symptoms, but also lead to suicidal tendencies.