how do you discover if you have a condition like this?
I bet that could be a diabolical problem - you need cognitive surplus to recognize you have a problem, and investigate what the causes might be and how you can identify them. And the problem you have is robbing you of that cognitive surplus.
You or someone you know notices your behavior changing or you show other symptoms and then you see a doctor? Then the doctor diagnoses you with this problem. I don't see how else you would discover it.
I bet that could be a diabolical problem - you need cognitive surplus to recognize you have a problem, and investigate what the causes might be and how you can identify them. And the problem you have is robbing you of that cognitive surplus.