<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, lately I have been feeling like my throat is tight and Ive noticed a lump in my neck. Also, my neck seems to be more swollen than usual.  <response>: These symptoms could be caused by a thyroid disease. I will have to conduct further tests to confirm a diagnosis, but its likely that your thyroid gland is not functioning properly. 