Answer Wiki. ' denotes foot,  denotes inches, where 1 foot is equivalent of 12 inches (though I'm not American and I generally don'thave any idea how to work with US customary units, it really had quite an interesting history as the number 12 was used for conversion by many countries, including Ancient Rome). So that'd be 5 * 12 + 6 = 60 + 6 = 66 inches.
Graves' Disease. The most common cause of hyperthyroidism is Graves' disease. This is an autoimmune disorder that attacks the thyroid gland and triggers the release of high levels of thyroid hormones. One of the hallmarks of Graves' disease is a visible and uncomfortable swelling behind the eyes.
There are several forms of hyperthyroidism, including: Graves' disease (diffuse toxic goiter). Graves' disease is the most common cause of hyperthyroidism. Researchers believe Graves' disease is caused by an antibody which stimulates the thyroid too much.This overstimulation causes the excess production of thyroid hormone.yperthyroidism caused by toxic nodular goiter is a condition in which one or more nodules of the thyroid becomes overactive. Symptoms of toxic nodular goiter do not include bulging eyes or skin problems, as in Graves' disease. The cause of toxic nodular goiter is not known. Thyroiditis.