Subacute thyroiditis is an inflammatory disease of the thyroid gland, characterized by an increase in the level of thyroid hormones in the blood plasma, resulting from a viral infection against the background of an autoimmune process. Its most common type is de Quervain's thyroiditis, which usually develops after a viral infection of the upper respiratory tract. The disease is manifested by pain and enlargement of the thyroid gland, a violation of its function, which can lead to hyperthyroidism or hypothyroidism. Subacute thyroiditis is self-limited and, as a rule, requires symptomatic treatment.
History of the disease and interesting historical facts
Subacute thyroiditis was first described in the early 19th century, when physicians began systematically recording cases of thyroid inflammation. The discovery of the link between viral infections and the development of thyroiditis played a key role in understanding this disease. Medical reference books and historiographic sources mention cases of the disease associated with viruses such as the mumps virus, pigs, and coronaviruses. In the 1940s, with the development of medical research, the main pathogenesis and etiologic factors were identified, which directed research to the study of the effect of viruses on the thyroid gland. Over the past decades, numerous studies have been conducted that have clarified the picture of the course of the disease and its treatment.
Epidemiology
Epidemiological studies show that subacute thyroiditis is more common among women (3-5 times more than men) aged 30 to 50 years. According to various sources, the incidence is from 4 to 15 cases per 100,000 population per year. It should be noted that subacute thyroiditis can occur both during epidemics of infectious diseases and at a later date after them. The peak incidence is observed in the cold months, which may be due to the increased number of viral infections during this period.
Genetic predisposition to this disease
Studies suggest that subacute thyroiditis may have a genetic predisposition, although the specific genetic markers remain a matter of debate. In particular, patients with subacute thyroiditis have been shown to have a high frequency of HLA typing, suggesting a possible link to genetic factors. Mutations in genes associated with the immune system have also been found, which may cause abnormal immune responses to viral invasions. Several studies highlight the importance of its hereditary nature, as close relatives of patients have a higher incidence of autoimmune diseases.
Risk factors for the development of this disease
Subacute thyroiditis can be caused by several factors, including:
- Viral infections (eg, mumps, rubella, Epstein-Barr virus);
- Physical factors: sudden climate changes and hypothermia;
- Chemical factors: exposure to toxic substances that can disrupt thyroid function;
- Autoimmune diseases such as Graves' disease or Hashimoto's thyroiditis may increase the risk of developing subacute thyroiditis;
- Stressful situations and physical exhaustion can also contribute to the development of the disease.
Diagnosis of this disease
Diagnosis of subacute thyroiditis is based on clinical manifestations and laboratory tests. The main symptoms include:
- Enlargement of the thyroid gland;
- Pain in the neck area that may radiate to the ear;
- General weakness and fatigue;
- Cardiovascular disorders (tachycardia);
- Loss of strength and rapid fatigue.
Laboratory tests show elevated TSH and free thyroid hormone levels, as well as high levels of C-reactive protein and thyroglobulin. Radiological examinations, such as thyroid ultrasound, help to identify changes in the structure of the organ. Differential diagnosis includes exclusion of other forms of thyroiditis and thyroid pathology, such as hyperthyroidism, thyroid cancer, and hypothyroidism.
Treatment
Treatment of subacute thyroiditis does not always require specific therapy, as many patients recover on their own. The main focus is on symptomatic therapy. In case of severe pain, nonsteroidal anti-inflammatory drugs (Ibuprofen, Naproxen) are prescribed. In case of severe symptoms and hyperthyroidism, glucocorticosteroids can be used. Surgical intervention is extremely rare, only in case of formation of purulent abscesses or suspicion of oncopathology. Other types of treatment may include physiotherapy, which helps to reduce pain and improve the general condition of the patient.
List of medications used to treat this disease
Among the main medications used to treat subacute thyroiditis are:
- Nonsteroidal anti-inflammatory drugs (Ibuprofen, Diclofenac);
- Glucocorticosteroids (prednisolone).
- Thyroid hormone preparations if specified hypothyroidism has developed;
- Vitamins and minerals to maintain the patient's general condition.
Disease monitoring
Monitoring of patients with subacute thyroiditis includes regular follow-up examinations and laboratory tests to assess thyroid function. The prognosis of the disease is usually favorable, but complications such as chronic thyroiditis or relapses of the disease are rare. It is necessary to contact an endocrinologist for monitoring the condition and adjusting therapy.
Age-related features of the disease
Subacute thyroiditis may present differently in different age groups. In children, the disease is often milder and has a high probability of complete recovery of thyroid function. In older people, the disease may present with more pronounced clinical manifestations and require more careful monitoring. It is important to consider the patient's age when prescribing therapy, as the response to treatment may vary depending on concomitant pathology and overall health.
Questions and Answers
- What are the main symptoms of subacute thyroiditis? The main symptoms are an enlarged thyroid gland, pain in the neck, general weakness, tachycardia and rapid fatigue.
- How is subacute thyroiditis diagnosed? For diagnosis, clinical data, laboratory tests for hormone levels and thyroid ultrasound are used.
- Is surgical treatment required for subacute thyroiditis? Surgical treatment is required extremely rarely, in the case of the formation of purulent abscesses or suspected cancer.
- What is the prognosis for subacute thyroiditis? The prognosis is favorable, most patients completely restore thyroid function without long-term therapy.
- What are the risk factors for developing subacute thyroiditis? The main risk factors include viral infections, stressful situations, and climate change.
