Hypoxia and Medicine

Is there a term for an inability to clear one's mind resulting in insomnia?

I rarely get a good night of sleep. Usually about four hours per night, five if I am lucky. This is usually because seemingly random questions pop into my head while I am half awake and feel the need to research them. Is this a personality flaw, or a medical condition? If the later, what is it called? I am not looking to medicate this problem. I am just curious if there is a term I can research and understand it by.

Public Comments

1. STRESS!
2. "Thinking."