I think all wounds should be able to be treated at the beginning of the game by finding simple objects but being very very slow
this is my idea cheap and easy to get treatments take a long time to do the job but are easy to get a hold of moderate ones kind of expensive to make but also not too difficult but will still take some time then extremely expensive methods they can work really fast also should be an option
and I think all wounds should have at least three methods to treat them in the game there's some it only have one method