I was diagnosed about a year ago with hypothyroid. My symptoms included brittle hair and nails, leg, ankle, wrist pain. My feet were extremely dry (I could sand furniture with them), memory and concentration problems and I was EXTREMELY tired. I have gained over 50 pounds. My doctor prescribed Synthroid. I kept going back because my symptoms did not get any better. He tried telling me I was depressed (gain 50 pounds and you do start to get a little depressed) but I knew that was not what was making me feel the way I did. He also thinks I am not getting enough oxygen when I sleep (I don't think that is it either). I went back to him a few days ago and he switched me to Armour Thyroid. This may be hard to believe, but the first day I started taking the Armour, I felt 100% better. I cannot believe the difference changing drugs has made. My suggestion is...You know your body, don't let anyone (even a doctor) tell you anything different. Keep pushing until you feel better.