Hashimoto's thyroiditis treatment American Thyroid Association hypothyroidism levothyroxine
Hashimoto’s thyroiditis is an autoimmune condition. Treatment depends on whether it has caused hypothyroidism (an underactive thyroid).
If TSH and free T4 are normal: usually no medicine is needed. Your clinician monitors thyroid function, typically with repeat TSH testing.
If hypothyroidism is present: the standard treatment is levothyroxine (T4), a daily thyroid-hormone replacement tablet. The dose is individualized using TSH blood tests, often rechecked about 6-8 weeks after starting or changing a dose. NIDDK guidance and the American Thyroid Association identify levothyroxine as standard therapy.
Take levothyroxine consistently, usually with water on an empty stomach. Calcium, iron, some antacids, and certain foods can reduce absorption, so they are commonly separated by several hours.
Do not self-start iodine or “thyroid support” supplements. Excess iodine can worsen autoimmune thyroid disease. Selenium is not routine treatment for everyone.
T3, desiccated thyroid, steroids, and surgery are not routine treatments for uncomplicated Hashimoto’s. Surgery is reserved for unusual situations such as a large goiter causing swallowing or breathing symptoms, or a suspicious thyroid nodule.
If there is a short early phase of excess thyroid hormone, called hashitoxicosis, treatment may only be symptom control such as a beta-blocker if prescribed. Antithyroid drugs generally do not treat the underlying hormone leakage.
Seek urgent medical care for severe chest pain, fainting, marked shortness of breath, confusion, or rapidly enlarging neck swelling. If you are pregnant or trying to conceive, contact a clinician promptly because TSH targets and monitoring need to be stricter.
A clinician should confirm the diagnosis with TSH and free T4 and sometimes thyroid antibodies before deciding whether you need treatment.
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