I have now received advice from our Admin and they have given the following web sites for you:-
Alzheimer's Disease International have this page on their site - https://www.alz.co.uk/associations that points to local associations for many nations.
In South Korea's case it's - https://www.alz.co.uk/associations#south_korea
I see that other forum members have also helped in this way so I hope all this can get you started on the road to find the help you need.
