Please remember that Spooky doesn't cure. It assists the body to do what it can, but it is the body that heals or cures itself.
There are Programs for dementia. Whether they will help in any specific case, we can't predict. Maybe a Grade Program scan would be of assistance in determining that.
If you research the disease and find other symptoms or causes, you may have more Programs that may assist the body, as well...
David Bourke's SAMA Episode #6 - Mining for Knowledge, is valuable teaching to learn how to find and set up programs to assist with any issue.
For more details, please check the link: