Explanation:

The most common cause for goitre is iodine deficiency, commonly seen in countries that scarcely use iodized salt. Goiter, is a swelling in the neck resulting from an enlarged thyroid gland.A goitre can be associated with a thyroid that is not functioning properly.A goiter can present as a palpable or visible enlargement of the thyroid gland at the base of the neck. A goiter, if associated with hypothyroidism or hyperthyroidism, may be present with symptoms of the underlying disorder.