Which of the Following is a characteristic Feature of Subacute Thyroiditis24 of 100AEuthyroidismBHypothyroidismCHyperthyroidismDThyroid Nodule

Subacute thyroiditis, also known as de Quervain's thyroiditis, is an inflammatory disease of the thyroid gland. It is characterized by the following phases:

1. Hyperthyroidism: This is the initial phase of the disease where the thyroid gland is inflamed and releases excess thyroid hormones into the bloodstream. Symptoms may include nervousness, heat intolerance, heart palpitations, and weight loss.

2. Euthyroidism: This is a transient phase where thyroid hormone levels may return to normal.

3. Hypothyroidism: This is the final phase where there may be a temporary decrease in thyroid hormone production. Symptoms may include fatigue, weight gain, cold intolerance, and depression.

4. Return to Euthyroidism: Most patients eventually return to the euthyroid state, although some may remain hypothyroid and require treatment.

Therefore, the characteristic feature of subacute thyroiditis is Hyperthyroidism (C). However, it's important to note that patients can also experience periods of Euthyroidism (A) and Hypothyroidism (B). Thyroid Nodule (D) is not typically associated with subacute thyroiditis.