My mom has BMS and I have searched the net about it, not much to find, the usual things can cause it and no cures just things to help with it. We have not found out why she has it. She does have pn and she is on some medications that can cause dry mouth but BMS is more severe than just dry mouth.

good luck, if you have any great cure/remedy, please share, Iam always looking for things to help my mom.