What are the symptoms of acute thyroiditis?

Written by Luo Juan
Endocrinology
Updated on September 24, 2024
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Acute thyroiditis generally refers to acute suppurative thyroiditis, a type of pyogenic infectious disease. For instance, many patients may exhibit symptoms of an upper respiratory tract infection or experience swelling, pain, or difficulty swallowing in the lateral aspect of the thyroid in the anterior neck following a fine needle aspiration biopsy of a thyroid nodule. The local skin over the thyroid may display erythema or heat, and some may also have systemic symptoms of a febrile disease, such as increased body temperature, generalized body aches, and fatigue, along with swelling and pain in the cervical lymph nodes. Thus, the primary symptoms of acute thyroiditis are infectious, accompanied by symptoms of compression pain due to thyroid enlargement.

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How is thyroiditis diagnosed?

Thyroiditis, clinically more commonly seen as subacute thyroiditis, is primarily caused by viral infections. The main clinical symptoms include pain in the anterior neck accompanied by fever, typically in the afternoon or evening. Upon examination, the thyroid is enlarged and tender. In terms of auxiliary examinations, blood tests reveal that some patients may have elevated white blood cells if there is a concurrent infection, and an increased erythrocyte sedimentation rate. Furthermore, initially, there might be mild signs of hyperthyroidism. Thyroid ultrasound may suggest signs of subacute thyroiditis, and the iodine uptake rate is decreased. If further examination is desired, a fine needle aspiration of the thyroid can be performed to help comprehensively consider and confirm the diagnosis.

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Is thyroiditis contagious?

Thyroiditis, based on its cause, can be classified into subtypes such as subacute thyroiditis and autoimmune thyroiditis. Subacute thyroiditis is primarily caused by viral infections leading to the destruction of the thyroid follicular structure, and it is not contagious. Autoimmune thyroiditis primarily involves the presence of autoantibodies within the body, which lead to the destruction of thyroid follicles and consequently to the apoptosis of thyroid cells. This cause is also non-contagious. Therefore, thyroiditis cannot be transmitted, but it does have genetic susceptibility. For patients whose parents have thyroiditis, their children may also have thyroiditis.

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How is thyroiditis treated?

Thyroiditis is primarily divided into acute, subacute, and chronic types, along with some painless and postpartum thyroiditis. If it is acute or subacute thyroiditis, it is a self-limiting disease caused by viral infections, and there is no need to use drugs that adjust thyroid function. Treatment mainly involves the use of non-steroidal or hormonal medications, as well as drugs that control heart rate. If it is autoimmune thyroiditis, commonly referred to as Hashimoto's thyroiditis, it often presents with positive thyroid antibodies. In the early stages, thyroid function may be normal, but typically progresses to reduced thyroid function over time. When thyroid function tests reveal reduced thyroid function, timely supplementation of thyroid hormone levels can control this type of autoimmune thyroiditis within a normal range. Additionally, for painless thyroiditis and postpartum thyroiditis, particularly the latter, which is often related to the mechanism of postpartum immune changes, it primarily depends on whether thyroid function has changed. If there is no change in thyroid function, treatment is temporarily unnecessary. (Medication should be administered under the guidance of a doctor.)

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What department does thyroiditis fall under?

Thyroiditis is a common disease in endocrinology. Thyroiditis refers to the inflammation of the thyroid gland, which can be divided into two types: bacterial inflammation and autoimmune inflammation. Clinically, thyroiditis can be categorized into three types: the first is called acute suppurative thyroiditis, the second is called subacute thyroiditis, and the third is called chronic thyroiditis. Acute thyroiditis is a bacterial infection and the pathogens can be either bacteria or viruses. It is generally induced by an upper respiratory infection, which may trigger a bacterial or viral infection in the thyroid. Subacute thyroiditis is not a bacterial infection but an immunological inflammatory infection. The third type, chronic thyroiditis, is also known as Hashimoto's disease. All three types of thyroiditis can be treated in the department of endocrinology.

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Can you get pregnant with thyroiditis?

Patients with thyroiditis can become pregnant, but they must keep their thyroid function within the normal range. During the course of thyroiditis, it can manifest in three phases: hyperthyroidism, euthyroidism, and hypothyroidism. When thyroid function is overactive, it is necessary to maintain thyroid function at a basically normal level, and then plan for pregnancy under the guidance of a doctor. For patients with reduced thyroid function, it is even more necessary to maintain thyroid function within the normal range. It is advisable to consult a doctor and plan for pregnancy only after ensuring thyroid function is normal, as reduced thyroid function can impair fetal intellectual development.