What does thyroiditis mean?
Thyroiditis is inflammation of the thyroid gland, the small, butterfly-shaped gland in the neck that helps regulate metabolism. The condition can arise for several reasons, including autoimmune activity, infection, or temporary inflammation following childbirth. Its effects vary: some people develop neck pain or an enlarged gland, while others have changes in thyroid hormone levels. During some forms of thyroiditis, damaged follicles release stored hormone and can briefly produce hyperthyroidism; later, the gland may produce too little hormone and require replacement treatment. The term is also used to distinguish specific disorders, such as Hashimoto's thyroiditis and subacute thyroiditis. Although thyroiditis can cause fatigue, tenderness, palpitations, or other symptoms that overlap with other illnesses, it is diagnosed using clinical evaluation and tests such as blood tests and ultrasound. Recognizing the type of inflammation is important because treatment and long-term monitoring differ.
nounInflammation of the thyroid gland, a condition that may cause gland enlargement, pain, or changes in thyroid hormone production.
- Inflammation of the thyroid gland.
"Her thyroiditis was diagnosed after she developed neck pain and fatigue."
"The ultrasound showed changes consistent with subacute thyroiditis."
"Patients with autoimmune thyroiditis may need long-term hormone replacement."
Rare in general use; medical discussions often prefer the singular when referring to the condition.
"The study compared several forms of thyroiditides in children."
In some forms, thyroiditis can briefly cause hyperthyroidism as stored hormones leak from the inflamed gland.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thyroiditis come from?
The word combines the Greek term for the thyroid, derived from a word meaning “shield-shaped,” with the Greek medical suffix -itis, meaning “inflammation.” The thyroid's name refers to the shape of the gland's cartilaginous sections, which resemble a shield. The compound entered English medical usage in the 19th century and developed alongside related clinical terms such as thyroidectomy and thyroglobulin.
How thyroiditis is actually used
A specialized medical term used mainly in diagnosis, research, and discussion of thyroid disorders. It is usually classified by cause, course, or timing, such as autoimmune, subacute, silent, or postpartum.
Easily confused with thyroiditis
The thyroid is the gland itself, whereas thyroiditis is inflammation of that gland.
Thyrotoxicosis is the clinical state caused by excessive thyroid hormone, which can occur during some forms of thyroiditis but is not the same condition.