This patient support community is for discussions relating to thyroid issues, goiter, Graves disease, Hashimoto's Thyroiditis, Human Growth Hormone (HGH), hyperthyroid, hypothyroid, metabolism, pituitary gland, cancers, thyroiditis, and thyroid Stimulating Hormone (TSH).
The thyroid is what regulates pretty much everything, because it regulates your metabolism. Your thyroid can swell when it becomes irritated from not responding to the hormones your brain is sending it. You probably need a hormone supplement (like the Thyroxin you mentioned) everyday.
The chances of acquiring this increase with age. It’s good that your Doctor wants you to see a specialist, an Endocrinologist, he/she shows that he/she wants you to get the specialized care you need. I wouldn't get stressed out, but the sooner you see one the sooner you will get what your body needs to work right.
If you want to learn more I would look at Endocrinology websites, there are a bunch out there.
Bye the way I am English but live in Portugal just been home for a visit feeling bit home sick at the moment
Thanks again