Depression (or Major Depressive Disorder) is characterized by blue, depressed feelings and a loss of interest in activities that used to feel enjoyable. When going through depression, you may experience unusually strong feelings of hopelessness, guilt or shame. It may be difficult to concentrate and/or make decisions and you may feel tired almost all the time. Some people with depression experience intrusive negative thoughts about their own inadequacy or about death and suicide. Sleep disturbance and appetite changes are other common characteristics of depression.
This article includes three case examples of what depression may feel like and where to get treatment: What are the signs of depression?