Just by chance I happened to see this topic.
I've had Lyme - probably for a very long time. I've had problems with fatigue, malaise, anxiety, depression and cognitive problems. Recently I had a neuropsychological exam. We had the follow up meeting but the final report isn't out yet.
The neuropsychologist has a year post-doc work in the roles different parts of the brain play in cognition. I had about 7 hrs of testing. They do all kinds of tests to check out all facets of memory, concentration, attention, etc. I'm wondering if you can get a referral for a neuropsych exam. I believe AD looks very much different than the problems from Lyme on the neuropsych test. I think it would give you a lot of insight into what is really going on.
I thought I was having memory problems and of course can't multi-task. The tests showed that the underlying problems were different than I thought. I have a major deficit in processing speed and also in problem solving. There was some other stuff but anyways, there are many things still that weren't affected by the Lyme.
See if you can get a referral. It is expensive testing. My insurance considered the neuropsych exam a medical procedure and not a psychological test. So it was covered.
Oh yeah .... all those tests made for a very long day.