Can hypothyroidism cause the thyroid to stop working altogether?

Yes, in severe and long-standing cases of hypothyroidism, the thyroid gland may eventually stop working altogether, leading to a condition called Primary Hypothyroidism. This occurs when the thyroid gland fails to produce sufficient thyroid hormones on its own, despite the presence of adequate thyroid-stimulating hormone (TSH) from the pituitary gland. When left untreated or poorly controlled, severe hypothyroidism can lead to significant health complications and, eventually, complete thyroid failure. Therefore, it is crucial for individuals with hypothyroidism to receive appropriate treatment and regular monitoring to prevent the progression to this stage.