Hashimotos disease damages your thyroid function. It is also called chronic lymphocytic thyroiditis or just chronic thyroiditis. Hashimotos is the most common cause of hypothyroidism, an underactive thyroid.
The thyroid releases hormones that regulate your metabolism, body temperature, and muscle strength.
Hashimotos disease is an autoimmune disorder. The antibodies in your body attack the cells of the thyroid. Doctors do not know why this happens. Some scientists think genetic factors may be involved.
The cause of Hashimotos disease is not known. However, several risk factors have been identified for the disease. It is seven times more likely to occur in women than men, especially women who have been pregnant. Your risk may also be higher if you have a family history of autoimmune diseases, such as:
Hashimotos symptoms are not unique to the disease. Instead, it causes the symptoms of an underactive thyroid. Signs that your thyroid isnt working properly include:
You may have Hashimotos for many years before you have any symptoms. The disease can progress for a long time before it causes noticeable damage.
Some people with this condition develop an enlarged thyroid. Known as a goiter, this may cause the front of your neck to look swollen. A goiter rarely causes any pain. However, it may make your throat feel full or swallowing difficult.
Your doctor may suspect this condition if you have the symptoms of an underactive thyroid. If so, a blood test will be used to check your thyroid-stimulating hormone (TSH) levels. This common test is one of the best ways to screen for Hashimotos. TSH is a hormone made when thyroid activity is low.
Your doctor may also use blood tests to check your levels of:
These tests can help confirm your diagnosis
Not all people with Hashimotos need treatment. If your thyroid is functioning normally, you may just be monitored for changes.
If your thyroid is not producing enough hormones, you may need medication. Levothyroxine is a synthetic hormone that replaces the missing thyroid hormone, thyroxine. It has virtually no side effects. If you need this drug, you will be on it for the rest of your life.
Regular use of levothyroxine can return your hormone levels to normal. When this happens, your symptoms will usually disappear. However, you will probably need regular tests to monitor your hormone levels. This allows your doctor to adjust your dose as necessary.
Some supplements and medications can affect your bodys ability to absorb levothyroxine. It is important to talk to your doctor about any medications that youre taking. Some products that are known to cause problems include:
Certain foods can also affect absorption of this drug. Let your doctor know if you have a diet thats high in fiber or soy. These can affect your hormone levels.
If left untreated, Hashimotos disease can cause complications. These include:
Hashimotos can also cause problems during pregnancy. Recent research from Johns Hopkins suggests that women with this condition are more likely to give birth to babies with heart, brain, and kidney defects. This is true even when their thyroid function tests are normal during pregnancy.