Hi...sorry you are having your symptoms increase to the point you are looking at surgery....remember it is not a cure...just a means to slow progression......have you had a MRI recently?
Here is a list of Drs for your Country....not sure where they are....but as we have to do here, you may need to travel.....
Below are a list of Drs for you to research as the list is not a referral nor an emdorsement for those listed. The list was compiled by members here of Drs they ahve been to, treated by and liked.....
https://
www.medhelp.org/posts/Chiari-Malformation/CHIARI-DRS-LIST-CANADA/show/1270605