Depression is a mood disorder typified by differing extent of feeling sad, disappointed, lonely, hopeless, guilty & self doubt that could be rather severe & persisting for protracted spans of time. Everyday tasks might become harder in doing; however, the person may yet be capable of coping with them. During this stage, though, bleak feelings could turn rather acute.
Depression disorders have been categorized as bipolar & unipolar. Simply mania or depression coupled with mania is a manifestation of bipolar depression. Contrarily, depression is a manifestation of unipolar depression. Chief unipolar depression symptoms are:
Intense weariness.
Sleep disturbance, earlier wake-up times, problems falling asleep & sense of tiredness [...]