The thyroid gland is responsible for the secretion of a hormone that governs several vital bodily functions, including growth and metabolic activity. When the thyroid malfunctions and produces the thyroid hormone in either excess or deficient amounts, numerous symptoms of ill-health manifest over time. A “thyroid problem” then, refers to a set of symptoms that are associated with hypothyroidism (an underactive thyroid gland) or hyperthyroidism (an overactive thyroid gland). And it is noteworthy that these are common conditions that numerous people suffer from. Here are 10 warning signs typically associated with a dysfunctional thyroid.