Had fluctuations in thyroid levels, last blood exam seemed was normalizing. thyroid u/s normal. could this fluctuation cause alot body aches,stiffness?

Subacute thyroiditis: Hi. Assuming you're not taking thyroid hormone, it sounds like you've had a subacute thyroiditis, in which the inflamed and stunned thyroid suffers a temporary shutdown. Over several months you go from normal to hyper, back through normal to hypo, then usually back to normal. Symptoms vary all over the place, and yours aren't the most common, they could be related. See how it goes when back normal