Diffusion Extent Of Depression

Depression is probably the most common psychiatric complaint and was described by the medical institutions as the first time of Hippocrates, who calls melancholy.

The course of the disorder is extremely variable from one person to another; whether mild or severe acute or chronic. If untreated, depression in May last an average of four months or more. Depression is twice as prevalent among women than among men. The typical age of onset is in the 20s, but it may occur at any age.

Depressive disorder is often a recurring condition. The rate of recurrence depends on the severity of the first episode, with about a 90% rate of recurrence over five years for the severerely depressed and a 70% rate for the average psychiatric patient with severe depression. An extensive study on the basis of the population, including people who were never treated by a psychiatrist and probably had milder variant of major depression, which the 23-year recurrence rate to 50%. In 15% of the cases, the disease had a chronic course and not let a depression-free year of the 23 examined.

North American population studies have shown that 3-5% of men and 8-10% of women are suffering from a depressive episode at a time. The National Comorbidity Survey Replication (NCS-R), which from 2001 through 2002 , Found that 16.2% of the people had suffered a depressive episode in their lives. Overall, major depression affects approximately 8.2% of the Canadian population and about 8.7% of the U.S. population. Researchers who compared epidemiological factors in Canada and the United States found the rate of major depression are twice as high as for the Americans without medical insurance than for the Americans with insurance or for the Canadians in general.