03/02/2021
🏵️Let discuss something on Goiter🏵️
A goiter (GOI-tur) is an abnormal enlargement of your thyroid gland. Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple. Although goiters are usually painless, a large goiter can cause a cough and make it difficult for you to swallow or breath.
The most common cause of goiters worldwide is a lack of iodine in the diet. In the United States, where the use of iodized salt is common, a goiter is more often due to the over- or underproduction of thyroid hormones or to nodules in the gland itself.
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Symptoms
Not all goiters cause signs and symptoms. When signs and symptoms do occur they may include:
👉A swelling at the base of your neck that may be particularly obvious when you shave or put on makeup
👉A tight feeling in your throat
👉Coughing
👉Hoarseness
👉Difficulty swallowing
👉Difficulty breathing
Causes
Your thyroid gland produces two main hormones — thyroxine (T-4) and triiodothyronine (T-3). These hormones circulate in your bloodstream and help regulate your metabolism. They maintain the rate at which your body uses fats and carbohydrates, help control your body temperature, influence your heart rate, and help regulate the production of proteins.
Your thyroid gland also produces calcitonin — a hormone that helps regulate the amount of calcium in your blood.
Your pituitary gland and hypothalamus control the rate at which T-4 and T-3 are produced and released.
The hypothalamus — an area at the base of your brain that acts as a thermostat for your whole system — signals your pituitary gland to make a hormone known as thyroid-stimulating hormone (TSH).
Your pituitary gland — also located at the base of your brain — releases a certain amount of TSH, depending on how much thyroxine and T-3 are in your blood. Your thyroid gland, in turn, regulates its production of hormones based on the amount of TSH it receives from the pituitary gland.
Having a goiter doesn't necessarily mean that your thyroid gland isn't working normally. Even when it's enlarged, your thyroid may produce normal amounts of hormones. It might also, however, produce too much or too little thyroxine and T-3.
Several things can cause your thyroid gland to enlarge. Some of the most common are:
☑️Iodine deficiency. Iodine is essential for the production of thyroid hormones, and is found primarily in seawater and in the soil in coastal areas. In the developing world, people who live inland or at high elevations are often iodine deficient and can develop goiters when the thyroid enlarges in an effort to obtain more iodine. Iodine deficiency may be made worse by a diet high in hormone-inhibiting foods, such as cabbage, broccoli and cauliflower.
In countries where iodine is routinely added to table salt and other foods, a lack of dietary iodine isn't usually the cause of goiters.
☑️Graves' disease. A goiter can sometimes occur when your thyroid gland produces too much thyroid hormone (hyperthyroidism). In someone who has Graves' disease, antibodies produced by the immune system mistakenly attack the thyroid gland, causing it to produce excess thyroxine. This overstimulation causes the thyroid to swell.
☑️Hashimoto's disease. A goiter can also result from an underactive thyroid (hypothyroidism). Like Graves' disease, Hashimoto's disease is an autoimmune disorder. But instead of causing your thyroid to produce too much hormone, Hashimoto's damages your thyroid so that it produces too little.
☑️Sensing a low hormone level, your pituitary gland produces more TSH to stimulate the thyroid, which then causes the gland to enlarge.
☑️Multinodular goiter. In this condition, several solid or fluid-filled lumps called nodules develop in both sides of your thyroid, resulting in overall enlargement of the gland.
☑️Solitary thyroid nodules. In this case, a single nodule develops in one part of your thyroid gland. Most nodules are noncancerous (benign) and don't lead to cancer.
☑️Thyroid cancer. Thyroid cancer is far less common than benign thyroid nodules. A biopsy of a thyroid nodule is very accurate in determining whether it's cancerous.
☑️Pregnancy. A hormone produced during pregnancy, human chorionic gonadotropin (HCG), may cause your thyroid gland to enlarge slightly.
☑️Inflammation. Thyroiditis is an inflammatory condition that can cause pain and swelling in the thyroid. It may also cause the body to produce too much or too little thyroxine.
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