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.
The most common type of hypothyroidism is that caused by primary thyroid gland failure. Basic causes of primary hypothyroidism are autoimmune, silent, postablative, goitrous, athyreotic and nonautoimmune (e.g., Riedel's), and subacute thyroiditis. Chronic autoimmune lymphocytic thyroiditis (Hashimoto's disease) is the most common cause of thyroid gland dysfunction. Replacement of lacking thyroid hormones reduces high blood pressure (BP) and total cardiovascular risk. Similar effects have also been described in subclinical hypothyroidism.