stevegee, so very sorry you are going through this. Post concussion syndrome is awful and can seem overwhelming. The only ones who can truly feel your pain are those that have experienced it. Many times doctors and inner circles don't fully understand what you are going through.
I believe the sensory overload, mental fatigue etc creates extreme challenges that result in higher levels of anxiety. But as you heal things will start to return to more of a balance. A more normal set of emotions that we all have.
Please know that like all injuries this will heal. You got this!
It's encouraging that you are on this site and able to post and get support. How are you doing this week? Have you begun concussion behavioral therapy to help during the healing process?