Valuable information on autoimmune disease and your thyroid gland
Hashimoto’s disease, also called chronic lymphocytic thyroiditis or autoimmune thyroiditis, is an autoimmune disease. An autoimmune disease is a disorder in which the body’s immune system attacks the body’s own cells and organs. Normally, the immune system protects the body from infection by identifying and destroying bacteria, viruses, and other potentially harmful foreign substances.
In Hashimoto’s disease, the immune system attacks the thyroid gland, causing inflammation and interfering with its ability to produce thyroid hormones. Large numbers of white blood cells called lymphocytes accumulate in the thyroid. Lymphocytes make the antibodies that start the autoimmune process.
Hashimoto’s disease often leads to reduced thyroid function or hypothyroidism. Hypothyroidism is a disorder that occurs when the thyroid doesn’t make enough thyroid hormone for the body’s needs. Thyroid hormones regulate metabolism—the way the body uses energy—and affect nearly every organ in the body. Without enough thyroid hormone, many of the body’s functions slow down. Hashimoto’s disease is the most common cause of hypothyroidism in the United States.
What are the symptoms of Hashimoto’s disease?
Many people with Hashimoto’s disease have no symptoms at first. As the disease slowly progresses, the thyroid usually enlarges and may cause the front of the neck to look swollen. The enlarged thyroid, called a goiter, may create a feeling of fullness in the throat, though it is usually not painful. After many years, or even decades, damage to the thyroid causes it to shrink and the goiter to disappear.
Not everyone with Hashimoto’s disease develops hypothyroidism. For those who do, the hypothyroidism may be subclinical—mild and without symptoms, especially early in its course. With progression to hypothyroidism, people may have one or more of the following symptoms:
– weight gain
– cold intolerance
– joint and muscle pain
– constipation, or fewer than three bowel movements a week
– dry, thinning hair
– heavy or irregular menstrual periods and problems becoming pregnant
– memory problems
– a slowed heart rate
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