Hello...I need some help about the burning mouth syndrome I am experiencing..I started taking Avapro (a blood pressure medication in October) after switching from Vasotec to the relentess dry cough it gave me (after 20 yrs!) also..during this same time period, I was taking Lunesta to sleep most nights for about 3 weeks..(this created dry mouth)...so, any ideas? Could it be the avapro, the lunesta..or the switch from Vasotec? My doctor is just not sure...My tongue burns and I feel as though I have canker sores on the roof and back of my mouth....