The doctors are confused about what is causing my salivary glands to not release saliva then I get painful sores in mouth and tongue sometimes my tongue can turn purple.The first episode my neck was so swollen I couldnt breath went to the er.They thought I had mono the doctor said I really dont know but I will give you antibotics if it goes away it was a infection it took 3 treatments of antibotics.This was about 1.5 years ago .Now it is back what is your thoughts could this be MG.Please give me feed back?