全球范围内似乎没有任何流行病学的差异。年龄和性别校正后，在美国的一个州，全部年度发病率为4.9例/100000人。[2]Fatourechi V, Aniszewski JP, Fatourechi GZ, et al. Clinical features and outcome of subacute thyroiditis in an incidence cohort: Olmsted county, Minnesota, study. J Clin Endocrinol Metab. 2003;88:2100-2105.http://jcem.endojournals.org/cgi/content/full/88/5/2100http://www.ncbi.nlm.nih.gov/pubmed/12727961?tool=bestpractice.com女性与男性的比例是3.5:1，大多数情况下发生的年龄在30-50岁。[2]Fatourechi V, Aniszewski JP, Fatourechi GZ, et al. Clinical features and outcome of subacute thyroiditis in an incidence cohort: Olmsted county, Minnesota, study. J Clin Endocrinol Metab. 2003;88:2100-2105.http://jcem.endojournals.org/cgi/content/full/88/5/2100http://www.ncbi.nlm.nih.gov/pubmed/12727961?tool=bestpractice.com季节性变化因素已经在许多国家的一些研究中被指出，发病率最高的是北半球的夏季和秋季（7月至12月），是典型的病毒感染时节。[7]Martino E, Buratti L, Bartalena L, et al. High prevalence of subacute thyroiditis during summer season in Italy. J Endocrinol Invest. 1987;10:321-323.http://www.ncbi.nlm.nih.gov/pubmed/3624803?tool=bestpractice.com
