Initial Post on Hypothyroidism v Hyperthyroidism Hypothyroid…
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Initiаl Pоst оn Hypоthyroidism v Hyperthyroidism Hypothyroidism аnd Hyperthyroidism аre two opposite diseases. In Hypothyroidism, the thyroid produces less than an adequate amount of thyroid hormone, mainly thyroxine (T4) and triiodothyronine (T3) (Zamwar & Muneshwar, 2023). In Hyperthyroidism, the thyroid produces too much thyroid hormone. The thyroid and its hormones affect the “metabolic rate of cells throughout the body.” (Sievert, 2024). This means that the underproduction or overproduction of thyroid hormone affects health, weight, body temperature, sleep, and energy levels. However, the signs and symptoms often can go unnoticed and result in the diseases being harder to diagnose. Etiology of Hypothyroidism One of the most common causes for hypothyroidism is Hashimoto’s Thyroiditis, a condition in which the immune system attacks the thyroid cells (Sievert, 2024). The chronic destruction and inflammation of the thyroid results in a buildup of connective tissue, leading to fibrosis, which in turn causes a deficit in thyroid hormone production. Genetic and hereditary influences are the leading cause in people whose family has a history of hypothyroidism. Additionally, studies have shown that hypothyroidism is associated with genes that regulate autoimmunity, which coincides with Hashimoto’s thyroiditis being the leading cause. (Zamwar & Muneshwar, 2023). As such, genetics largely influence an individual’s risk for developing and suffering from hypothyroidism. However, other factors influence the possibility of developing hypothyroidism. These include iodine deficiency or iodine overabundance, medications, and thyroid surgery. Some medications that are used to treat hyperthyroidism can overcorrect and reduce thyroid hormone production too much. Others, especially iodine heavy drugs, can cause an immediate cessation of thyroxine production (Zamwar & Muneshwar, 2023). Lastly, the regulation of thyroid hormone production is regulated and heavily controlled by the hypothalamus and the pituitary gland through the release of thyroid-stimulating hormone, or TSH (Sievert, 2024), so any disease that can affect the pituitary gland and hypothalamus can in turn affect the thyroid, leading to either hyperthyroidism or hypothyroidism. Etiology of Hyperthyroidism Not unsurprisingly, hyperthyroidism is also heavily related to genetics. The most common cause for hyperthyroidism is Graves’ disease, an autoimmune condition which can cause excessive incitement of the thyroid, leading to an overproduction of thyroid hormone (Sievert, 2024). The mechanism of Graves’ disease is an uncontrolled stimulation of TSH receptors by TSH receptor antibodies, rather than TSH itself. Graves’ disease affects women by a large margin more than it affects men, with a ratio of eight women to one man (Bereda et al., 2022). Similarly to hypothyroidism, a genetic predisposition with a family history of autoimmune disorders or hyperthyroidism is associated with a greater risk of developing hyperthyroidism. One other major cause of hyperthyroidism is the presence of nodules on the thyroid gland, which work autonomously and overproduce thyroid hormone (Bereda et al., 2022). Clinical Presentations of Hypothyroidism and Hyperthyroidism Both hypothyroidism and hyperthyroidism can have no signs or symptoms for a long time. The signs and symptoms can easily be nonexistent, which not only causes the diseases to be harder to diagnose and treat, but can lead to life-threatening situations in which the problem is only evident after it has become severe. Other times, the signs and symptoms are evident from the outset However, even in these situations, they are usually unspecific to hypothyroidism and hyperthyroidism. Both diseases have similar issues, but often present in opposite ways. Hypothyroidism is often accompanied with weakness and fatigue, cold sensitivity, weight gain, dry skin/hair, constipation, and depression (Zamwar & Muneshwar, 2023), (Sievert, 2024). In women, it can cause irregular menstruation. Worsened moods, vision, sight, and hearing are also present occasionally. However, none of these symptoms are specific to hypothyroidism. Because the thyroid affects nearly all major organs, complications arise. An increase in blood cholesterol and blood pressure are accompanied by decreased cardiac output and heart rate. Memory loss, dementia, and cognitive decline may develop (Zamwar & Muneshwar, 2023). As such, it is critical that hypothyroidism is treated as soon as possible. In hyperthyroidism, the symptoms are often contrasting. Weight loss, an increased appetite, nervousness, anxiety, irritability, heat sensitivity and sweating, fatigue, greater frequency of bowel movements, and sleep issues are all possible symptoms of hyperthyroidism (Sievert, 2024). Some of the signs are the same, like fatigue and mood issues, but most of them are opposites. However, once again, these issues are not specific to hyperthyroidism and additional tests are required to accurately diagnose the disease. Like hypothyroidism, further complications that affect the cardiac, nervous, and circulatory system are possible. Diagnosis and Treatment of Hypothyroidism and Hyperthyroidism The most accurate way to diagnose hypothyroidism or hyperthyroidism is to run a blood test (Sievert, 2024).The test specifically detects the levels of thyroid-stimulating hormone (TSH), thyroxine (T4), or triiodothyronine (T3). In hypothyroidism, TSH levels are higher than average for the age and gender, while T4 levels are lower (Zamwar & Muneshwar, 2023). In contrast, hyperthyroidism is often classified by high levels of T4 and T3, whereas TSH levels are lower than usual (Sievert, 2024). The appropriate amount of TSH, T4, and T3 change based on the time of day, age, gender, and season, meaning that even blood tests are not always entirely conclusive (Zamwar & Muneshwar, 2023). Sometimes, there are additional tests run to detect the underlying causes of hypothyroidism or hyperthyroidism, like a radioactive iodine uptake test, or an RAIU (Bereda et al., 2022). Treatment for hypothyroidism is usually rather simple. Medications for hypothyroidism often involve just a pill or tablet that aims to increase the levels of thyroid hormone. Most times, the underlying cause is not addressed and the treatment is designed only to alleviate symptoms and complications, not restore the thyroid to proper functioning (Sievert, 2024). Hyperthyroidism is somewhat more complicated, as an increase in thyroid hormone production must be targeted rather than supplementing a lack. Some medications aim at reducing the hormone production itself, while others try to reduce the amount of thyroid gland present, destroying tissue. In some more severe cases, surgery is even possible, removing part or all of the thyroid. Each case is unique and should be dealt with as such. Follow up care for hyperthyroidism is often necessary as well (Sievert, 2024). Conclusion Hypothyroidism and Hyperthyroidism are common diseases that can affect any age group. Classified as either an abundance or deficit of thyroid hormone production, the diseases can have major complications and present in a wide variety of symptoms, sometimes not presenting at all. Genetic and hereditary risk are the greatest influences, with other actors playing into possible development of either disease. The complications can be severe and as such, treatment needs to be sought as soon as possible. However, hypothyroidism and hyperthyroidism are diseases that, when treated, are quite livable and individuals often maintain a high quality of life. References Bereda, G., et al., Science and Innovation(SNI) publications, & Bereda, G. (2022). Hyperthyroidism: Definition, causes, pathophysiology and management. Journal of Biomedical and Biological Sciences, 1–2, 1–11. Sievert, D. (2024, February 10). Hypothyroidism vs Hyperthyroidism - What’s The Difference? UCLA Medical School. https://medschool.ucla.edu/news-article/hypothyroidism-vs-hyperthyroidism-whats-the-difference#Hypothyroidism-Definition Zamwar, U. M., & Muneshwar, K. N. (2023). Epidemiology, Types, Causes, Clinical Presentation, Diagnosis, and Treatment of Hypothyroidism. Cureus, 15(9), 1–9. https://doi.org/10.7759/cureus.46241
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