To the Editor.
—The prevalence of silent thyroiditis (lymphocytic thyroiditis with spontaneously resolving hyperthyroidism) may become a controversy in clinical thyroidology. Nikolai et al1 found the disorder in 10% to 20% of their cases of hyperthyroidism. In a review of the subject, Woolf2 agreed that silent thyroiditis was relatively common, occurring in 3.6% to 23% of all cases of hyperthyroidism. However, Vitug and Goldman3 in a recent report in the Archives found only one case that fulfilled the criteria for diagnosis in a three-year review of 86 patients with hyperthyroidism encountered in their hospital.In 1983, I reported in a letter in the Archives that the disorder was very rare in my endocrine practice.4 I conducted a random poll of endocrinologists in Philadelphia and in several medical centers in the United States, and the universal opinion was that silent thyroiditis was indeed quite rare. The key
Schneeberg NG. Frequency of Silent Thyroiditis. Arch Intern Med. 1985;145(12):2268. doi:10.1001/archinte.1985.00360120140036