The usual diagnosis for Hashimoto's disease has three parts:

(1) Measurements of your blood levels of thyroxine (a hormone made by the thyroid) - it is usually low in Hashimoto's disease.

(2) Measurements of your blood levels of Thyroid Stimulating Hormone (TSH). TSH is made by the pituitary gland and is usually elevated in Hashimoto's disease.

(3) Because Hashimoto's disease is an auto-immune disorder, there are often abnormally high blood levels of antibodies specific for thyroid peroxidase (TPO). TPO is an enzyme made in the thyroid which is important in making thyroid hormones.

All of those blood tests are easy to do - your doctor should be able to arrange them.

If they turn out to be positive for a Hashimoto's disease diagnosis your doctor will be able to discuss possible treatment with you.