Is thyroid disease an autoimmune disease?

Yes, some types of thyroid diseases, such as Hashimoto's thyroiditis and Graves' disease, are autoimmune diseases. Autoimmune diseases occur when the body's immune system mistakenly attacks its own tissues. In these particular thyroid diseases, the immune system attacks the thyroid gland, which can lead to inflammation and disruption of normal thyroid function. As a result, the thyroid gland may either produce too much or too little thyroid hormone, leading to various thyroid symptoms.