The thyroid gland affects nearly every metabolic function in body by producing hormones. From a minor, treatable goitre (enlarged gland) to potentially fatal malignancy, thyroid disorders can affect everyone. The majority of thyroid issues are caused by aberrant thyroid hormone production. Hyperthyroidism is the effect of increase in amount of thyroid hormone. The result of inadequate hormone production is hypothyroidism. While certain thyroid conditions might have unpleasant or inconvenient side effects, with the right diagnosis and treatment, the majority can be effectively managed. Although an excess of thyroid hormones is the cause of all forms of hyperthyroidism, there are several ways the ailment might manifest itself. Graves' disease is the excessive thyroid hormone production. Some goitre may contain a number of these nodules; these nodules form in the thyroid gland and begin to release thyroid hormones, disturbing the body's chemical equilibrium leading to Toxic adenomas. Sub-acute thyroiditis is Inflammation of the thyroid that "leaks" extra hormones from the gland, causing transient hyperthyroidism that typically lasts a few weeks to months. Dysfunction of the pituitary gland or malignant thyroid gland growths, although uncommon, these factors can also lead to hyperthyroidism.