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What autoimmune disease causes low temperature

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Published by Acibadem Health Point Last updated June 6, 2025

What autoimmune disease causes low temperature

What autoimmune disease causes low temperature Autoimmune diseases are conditions in which the body’s immune system mistakenly attacks its own tissues, leading to a wide range of symptoms and health issues. While many autoimmune disorders are associated with symptoms like fatigue, joint pain, or skin changes, some can also influence body temperature regulation.

One autoimmune disease that can cause low body temperature, or hypothermia, is autoimmune thyroiditis, specifically Hashimoto’s thyroiditis. Hashimoto’s thyroiditis is a common cause of hypothyroidism, a condition where the thyroid gland’s ability to produce thyroid hormones decreases. The thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), play a vital role in regulating metabolism, energy production, and overall body temperature. When these hormones are deficient, metabolic processes slow down, often resulting in symptoms such as fatigue, weight gain, dry skin, and notably, a decreased ability to generate heat, leading to a sensation of feeling cold and, in some cases, actual lowering of core body temperature.

The connection between hypothyroidism and low body temperature is well-documented. In hypothyroid individuals, the body’s metabolic rate drops, impairing heat production. This can manifest as feeling unusually cold even in warm environments and, in severe cases, can contribute to measurable hypothermia. While mild temperature drops are more common, severe or untreated hypothyroidism can lead to more significant reductions in body temperature, especially in vulnerable populations like the elderly.

Apart from Hashimoto’s thyroiditis, other autoimmune conditions might indirectly influence temperature regulation, though they are less directly associated with hypothermia. For example, autoimmune adrenal insufficiency (Addison’s disease) primarily causes low blood pressure, fatigue, and skin changes, but during adrenal crises, body temperature regulation can be affected. However, Addison’s disease typically causes hypothermia only during severe crises, often accompanied by dehydration and shock.

It’s important to recognize that autoimmune diseases affecting temperature regulation often require comprehensive management. For hypothyroidism caused by autoimmune thyroiditis, treatment involves thyroid hormone replacement therapy, which can restore metabolic activity and improve temperature regulation. Proper diagnosis involves blood tests checking levels of TSH, T3, and T4, along with antibody tests like anti-thyroid peroxidase (anti-TPO) antibodies that help confirm autoimmune origin.

In conclusion, autoimmune thyroiditis, particularly Hashimoto’s thyroiditis, is a primary autoimmune disease associated with low body temperature due to decreased thyroid hormone production. Awareness of this relationship allows for early diagnosis and effective management, reducing the risk of complications and improving quality of life for affected individuals.

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