This is interesting. Before I was diagnosed as hypothyroid, I had many ear aches. They always hit while I was sleeping, and were a major pain when waking in the middle of the night. I never put it together, but now that I think about it, they stopped when I went on Synthroid. I thought they were over until recently when I was awoken again on two occasions with ear aches. My latest bloodwork showed my TSH is higher than it should be, so maybe this is why they reappeared.