10 Thyroid Disorder Symptoms and Signs
Thyroid disease is a common problem because of over- or under function of the
thyroid gland. Ten common signs and symptoms of thyroid disease include:
- Feeling bloated
- Weight gain
- Mental fogginess
- Aches and pains
Quick GuideHyperthyroidism Symptoms and Treatment
Hyperthyroidism definition and facts
- Hyperthyroidism is a condition in which there is an excessive amount of thyroid hormones.
- Thyroid hormones regulate the metabolism of the cells.
- Normally, the rate of thyroid hormone production is controlled by the brain
from the pituitary gland,
which is in turn regulated by the hypthalamus.
- There are many possible causes of hyperthyroidism.
- Graves' disease, the most common cause of hyperthyroidism, can be
associated with eye disease (Graves' opthalmopathy).
- Common symptoms of hyperthyroidism include
- Treatments for hyperthyroidism include antithyroid medications,
radioactive ablation, and surgery.
What is hyperthyroidism?
Hyperthyroidism is a condition in which an overactive thyroid gland is
producing an excessive amount of thyroid hormones that circulate in the blood.
("Hyper" means "over" in Greek). Thyroid hormones include thyroxine (T4) and
triiodothyronine (T3), representing 99.9% and 0.1% of thyroid hormones,
respectively. T3 is actually the most active thyroid hormone. Much of the T4 is
converted to T3 in the bloodstream.
The thyroid itself is regulated by the pituitary gland in the brain. The
pituitary is further regulated by another gland in the brain, the hypothalamus.
The hypothalamus releases a hormone called thyrotropin releasing hormone
(TRH), which sends a signal to the pituitary gland to release thyroid stimulating
hormone (TSH). In turn, TSH sends a signal to the thyroid to release thyroid
hormones. With overactivity of any of these three glands, an excessive amount of
thyroid hormones can be produced, thereby resulting in hyperthyroidism
Thyrotoxicosis is a toxic condition that is
caused by an excess of thyroid hormones from any cause. Thyrotoxicosis can be
caused by an excessive intake of thyroid hormone or by overproduction of thyroid
hormones by the thyroid gland. Because both health-care professionals and patients often use
these words interchangeably, we will take some liberty by using the term
"hyperthyroidism" throughout this article.
Thyroid Gland illustration - Hyperthyroidism
Medically Reviewed by a Doctor on 8/1/2016