I came across this article but am still somewhat confused. Its like what came first the chicken or the egg. Is a brain injury the cause of depression in certain circumstances or the result of the brain injury the reason you become depressed?

Do the new frustrations and challenges you now experience trigger hidden or dormant psychological issues or is it chemical alterations in the brain based on the new stressors\challenges that cause it??? Any thoughts? The article is an interesting read.

I identify with all the markers link will download pdf.

http://www.google.com/url?sa=t&rct=j...BysZjE4nTwrwWQ