As someone who was just tested for memory issues and was diagnosed with "mild cognitive impairment," I can understand your concerns. I have learned that certain mental issues can cause such focusing problems-- such as depression. And certain medications for mental issues can cause such problems as well. For example, the psychiatrist suggested that the Klonopin I take could be causing some of my difficulties. So, I am being tried on a lower dosage. Check to see what your disorders are and what meds you are taking.

(Mind you, I also have some physical problems, too, that can explain some of mine.)