I have had symptoms for at least a year. Trouble sleeping, tiredness, severe itching at night, excessive thirst, brittle hair that's falling out, dry cracking nails and hard skin around my fingers. I also have constipation. I cannot loose weight no matter what I do. I wake up nightly in a pool of sweat but my hands and feet are always cold. I have always thought I had hypothyroidism but when tested my levels seem "normal". My quality of life is so low and I have been diagnosed with depression. Any suggestions on how to approach my doctor to get my complaints addressed?