Major depressive disorder Microchapters |
Differentiating Major depressive disorder from other Diseases |
---|
Diagnosis |
Treatment |
Follow-up |
Case Studies |
Major depressive disorder historical perspective On the Web |
American Roentgen Ray Society Images of Major depressive disorder historical perspective |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Clinical depression was originally considered to be a chemical imbalance in transmitters in the brain, a theory based on observations made in the 1950s of the effects of reserpine and isoniazid in altering monoamine neurotransmitter levels and affecting depressive symptoms.
The modern idea of depression appears similar to the much older concept of melancholia. The name melancholia derives from "black bile", one of the "four humours" postulated by Galen.
Clinical depression was originally considered to be a chemical imbalance in transmitters in the brain, a theory based on observations made in the 1950s of the effects of reserpine and isoniazid in altering monoamine neurotransmitter levels and affecting depressive symptoms. [1] Since these suggestions, many other causes for clinical depression have been proposed.[2]
Some medical professionals and anthropologists have formed several theories as to how depression may have evolutionary advantages, i.e., how it might have increased genetic fitness in ancestral populations. For example, psychic pain may have evolved in an analogous way to physical pain so that organisms avoid behaviour that hinders reproduction. This insight may be helpful in counseling therapy. [3][4] Proponents of the psychic pain theory tend to view clinical depression as a dysfunctional extreme of low mood or mild depression.
Numerous celebrities both dead and alive have been diagnosed with depression and spoken publicly about it. Some Hollywood celebrities include-
|date=
(help)