i am a diabetic and just recently got my blood sugar under control. It was up over 300 for a while and now is down below 150. i am taking Janumet 50/1000 2X a day and I also take Synthroid 150 mcg. I am having extreme numbness in my hands and feet. My hand almost feels like someone else's hand when its on my face. Also I am having vision problems. my endocrinologist has been slowly increasing my synthroid dosage and I go back in Feb. to be rechecked to see if this new dosage is getting my level down. I am very concerned about this numbness. could it be a result of being overmedicated with synthroid or is it simply from my sugar levels being high for several months?