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.
In such cases, the disorder is called primary hypothyroidism. (Secondary hypothyroidism is caused by disorders of the pituitary gland. Tertiary hypothyroidism is caused by disorders of the hypothalamus.). The two most common causes of primary hypothyroidism are: 1  Hashimoto's thyroiditis.2  This is an autoimmune condition in which the body's immune system attacks its own cells. 3  Overtreatment of hyper thyroidism (an overactive thyroid).ertiary hypothyroidism is caused by disorders of the hypothalamus.). The two most common causes of primary hypothyroidism are: 1  Hashimoto's thyroiditis. 2  This is an autoimmune condition in which the body's immune system attacks its own cells. 3  Overtreatment of hyper thyroidism (an overactive thyroid).