First, There is plenty of internationally recognized concussion information that proves that a concussion can happen without a loss of consciousness. Look at 4.4. Concussion results in a graded set of clinical symptoms that may or may not involve loss of consciousness.

http://www.natajournals.org/doi/full...2-6050-48.4.05

Are you refusing to leave the house or are you refusing to move out and live on your own? It sounds like you are refusing to leave the house. There is no justification for this. Even with severe symptoms, most can take short trips outside the home.

What prevents you from leaving the house?

You are quite adequate at expressing yourself clearly in some areas. In other areas, it appears more that you do not want to respond to simple questions.

What can't you do cognitively?

What is the difference between MCI and dementia? How does it change anything?