Definitely sounds like depression. Many of us have experienced this.

It could be caused by the concussion (biochemically) or it could be caused by the changes you are experiencing in your life because of the concussion. In either case, please do speak to a doctor and/or counselor about it. It is nothing to be ashamed of. It is a normal reaction to the difficult things that have happened to you, and there are treatments available.

Here's a depression screening test. Sometimes it's helpful to complete this and take the results in to your doctor as a way to start the conversation.

http://www.mentalhealthamerica.net/l...ion_screen.cfm