<unk>  is also called subacute thyroiditis. The most obvious symptom of subacute thyroiditis is pain in the neck caused by a swollen and inflamed thyroid gland. Other symptoms include difficulty swallowing, hoarseness, fatigue, feeling weak, fever, more frequent bowel movements, hair loss, heat intolerance, irregular menstrual periods in women, mood changes, nervousness, tremor, palpitations, and sweating. As the thyroid gland heals, it may release too little hormone, causing symptoms of hypothyroidism, including cold intolerance, constipation, fatigue, weight gain, dry skin and mood changes. Thyroid gland function often returns to normal. But in rare cases, hypothyroidism may be permanent.<unk>  is thought to be caused by the viral infections. The risk factors of<unk>  include viral infections, female gender, and a positive family history. Laboratory tests that may be done include thyroid stimulating hormone (TSH) level, T4 (thyroid hormone, thyroxine), T3, and radioactive iodine uptake. The mainstay of treatment is aspirin or non-steroidal anti-inflammatory drugs. The complications of<unk>  include hypothyroidism and tracheal compression.
De Quervain's thyroiditis
Riedel's thyroiditis
Hashimoto's thyroiditis
Silent thyroiditis
Primary thyroid lymphoma
Postpartum thyroiditis
Follicular thyroid cancer
Anaplastic thyroid cancer