I'm not sure I would call a concussion that keeps someone out of work and unable to do daily activities, for over a year, "mild".

But everyone does heal differently and everyone does have different areas of the brain injured...

It took almost three years before I was properly diagnosed with neuroendocrine dysfunction ... Many (possibly most) people don't get diagnosed for many more years than that!

Anyway, I'm finally improving and will continue to do so with the hormone replacement therapy.

There is hope for everyone I think.