I have been having the sensation of something in my throat, or neck for years. I ve had multiple tests done including endoscopy, scope down the nose, barium swallow, ultrasound of the thyroid, etc.. All come back negative accept my ultrasound came back showing a very small nodule about 3mm in size on my thyroid. My endocrinologist put me on synthroid, and told me the nodule was too small to even do biopsy. As time goes on, the feeling gets worse and some days really bad, and I have dizzy spells. Perhaps from anxiety? Any input would be much appreciated. I don t know what other tests I could do.