Suffering from tinnitus right ear, imbalance particularly in dark, fatigue, tremors. Dealing with these conditions from past two years doctor prescribed me thiamine hcl 100 mg, vit b12 750 mcg and folic acid 5 mg. Mri normal blood test normal vit b12 271. When I google my symptoms it pointed towards beri beri and multiple sclerosis I am very depressed right now consulted various doctors no one is quite sure some say it is due to thiamine deficiency some say it is due to vit b12 and vit d deficiency?