Causes of thyroiditis

Written by Zhang Jun Jun

Endocrinology

Updated on December 25, 2024

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The causes of thyroiditis are mainly divided into several types:

The first type is acute thyroiditis, which is mostly caused by bacterial infection. Some abscesses in the thyroid lead to fever and inflammation of the thyroid. Generally, anti-infection treatment can achieve a curative effect.

The second type, subacute thyroiditis, is mostly caused by viral infections. It is a self-limiting disease that can be cured by using some analgesics, and even some hormonal medications.

Chronic thyroiditis generally arises from autoimmune diseases. Often in the late stages, it causes reduced thyroid function. Since currently there are no drugs to intervene in autoimmune diseases, the main treatment is medication maintenance and control of thyroid function within the normal range.

Therefore, the causes of thyroiditis need to be divided into acute, subacute, and chronic thyroiditis to distinguish its causes.

(The use of medication should be done under the guidance of a professional doctor.)

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Can thyroiditis cause a fever?

Thyroiditis is generally classified into three types. The first type is chronic thyroiditis, among which chronic lymphocytic thyroiditis is common, also known as Hashimoto's thyroiditis. It is an autoimmune thyroid disease and generally does not cause fever. Another type is acute thyroiditis, where the local thyroid area, due to bacterial or viral infection, leads to a suppurative disease, which may be accompanied by fever. The third type is called subacute thyroiditis, which generally occurs after an upper respiratory tract infection and can manifest as thyroid pain, sometimes accompanied by symptoms of fever.

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Written by Chen Xie

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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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Written by Xu Dong Dong

Endocrinology

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Does thyroiditis require rest?

Some periods of thyroiditis require rest. The common types of thyroiditis clinically include subacute thyroiditis and autoimmune thyroiditis. Subacute thyroiditis has a relatively sudden onset, characterized by neck pain radiating to the back of the ear, fever, loss of appetite, tachycardia, muscle pain, excessive sweating, etc. If these acute symptoms are severe, rest is necessary, and treatment with non-steroidal anti-inflammatory drugs and steroids is required. If the symptoms are mild, involving only slight pain and discomfort, it might not be necessary to rest and one can continue working, but it is important to reduce the workload. In the case of autoimmune thyroiditis, most patients have a relatively stable condition and can carry on with normal work and life. However, if autoimmune thyroiditis enters a phase of hyperthyroidism with symptoms of high metabolism, it is also necessary to rest for a period. Some patients in the middle to late stages might experience symptoms of reduced thyroid function, such as dizziness, fatigue, chest tightness, and edema. If these conditions occur, it is appropriate to take some time to rest.

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Written by Li Hui Zhi

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What are the symptoms of thyroiditis?

The symptoms of thyroiditis, if in the early stages, include fever, particularly in the afternoon and evening, with some individuals' temperatures reaching 39 degrees Celsius. Secondly, there is neck pain, which is tender to touch. Thirdly, there may be mild symptoms of hyperthyroidism, such as palpitations, insomnia, irritability, weight loss, and increased frequency of bowel movements. If these symptoms are present, it is important to seek medical attention promptly and undergo diagnosis and treatment under the guidance of a doctor.

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Initial symptoms of thyroiditis

If it is the early stage of subacute thyroiditis, the patient will experience a fever, mainly in the afternoon or at night. Secondly, there is pain when bending the neck forward, and many patients feel as if they have a sore throat and thus visit the otolaryngology department. Thirdly, in the early stages, the patient experiences transient hyperthyroidism, with symptoms such as palpitations, excessive sweating, weight loss, and insomnia. Therefore, with these symptoms, it is advisable to promptly visit an endocrinology specialist for further thyroid function tests and thyroid ultrasound, followed by a definitive diagnosis and comprehensive treatment.