Welcome Tony.
You have been through a lot.
At the top of the forum there are a couple of "stickies" with link to information regarding Lyme Disease. That should help you with some information in that department.
We also have a forum for Alzheimer's that you can post on for support
http://neurotalk.psychcentral.com/forum59.html
And under Rare Diseases and Disorder, Chiari-Malformation
http://neurotalk.psychcentral.com/forum71.html
I hope you can find the support you need here. We are a very caring and open group! Welcome!