My dad passed from bulbar pasly, about a year after he passed I noticed when I was singing in the car(by myself,horrible voice)and noticed my voice going in and out. I was very worried put off going to the Doc, figured if I had what dad did I did not want to know. SO after 6 months of worring I went to the E.N.T. he also said acid reflux was damaging my voice box and gave me Nexium, it heals the damage.
With my dad his Bulbar started with his words slurring like he had a stroke or he was drunk and just got worse and worse. They also though he had the Metho Gravix thing, )where the highway from the brain to the mouth is missing a link like the dymino effect with one missing)
I did not realize the acid reflux could cause suck damage til a friend almost died because the acid ate where the stomach and such attach together and she was bleeding out. Could be worring for nothing. Good Luck