Can Thyroid Go From Underactive To Overactive?

Sometimes the symptoms are so subtle that they go unnoticed for a long time.

In other cases they come on suddenly over a period of a few days or weeks and are severe.

Many of the symptoms will start to clear up when your treatment takes effect, but some, including thyroid eye disease, may need separate treatment.

Can you go from being hypothyroid to hyperthyroid?

Cases of conversion from hyperthyroidism to hypothyroidism have been reported but conversion from hypothyroidism to hyperthyroidism is very rare. Although such cases have been reported rarely in the past we are now seeing such conversions from hypothyroidism to hyperthyroidism more frequently in clinical practice.

Can thyroid problems come and go?

Sometimes the symptoms are so subtle that they go unnoticed for a long time. In other cases they come on suddenly over a period of a few days or weeks and are severe. Many of the symptoms will start to clear up when your treatment takes effect, but some, including thyroid eye disease, may need separate treatment.

Can thyroid function fluctuate?

These tests, especially the TSH, are highly sensitive and reliable, and the levels of thyroid hormones or TSH do not fluctuate widely during the day, or from day to day. If the levels of thyroid hormone drop, the pituitary gland makes more TSH to stimulate the thyroid gland to work harder and make more thyroid hormone.

How do I know if my thyroid is underactive or overactive?

An underactive thyroid gland (hypothyroidism) is where your thyroid gland does not produce enough hormones. Common signs of an underactive thyroid are tiredness, weight gain and feeling depressed.