发病率为 7 人/1000 人,且最常见于老人。[4]Shulman JD, Beach MM, Rivera-Hildago F. The prevalence of oral mucosal lesions in U.S. adults: data from the Third National Health and Nutrition Examination Survey, 1988-1994. J Am Dent Assoc. 2004;135:1279-1286.http://www.ncbi.nlm.nih.gov/pubmed/15493392?tool=bestpractice.com假牙配戴者的发病率增加了大约 3 倍,男性的发病率增加了将近 2 倍。[5]MacEntee MI, Glick N, Stolar E. Age, gender, dentures and oral mucosal disorders. Oral Dis. 1998;4:32-36.http://www.ncbi.nlm.nih.gov/pubmed/9655042?tool=bestpractice.com10% 的 HIV 感染患者可能机会性感染白色念珠菌,可能患有口角炎。[6]Samaranayake LP. Oral mycoses in HIV infection. Oral Surg Oral Med Oral Pathol. 1992;73:171-180.http://www.ncbi.nlm.nih.gov/pubmed/1549312?tool=bestpractice.com检测结果显示,7.8% 的克罗恩病患者和 5% 的溃疡性结肠炎患者患有口角炎。[7]Lisciandrano D, Ranzi T, Carrassi A, et al. Prevalence of oral lesions in inflammatory bowel disease. Am J Gastroenterol. 1996;91:7-10.http://www.ncbi.nlm.nih.gov/pubmed/8561147?tool=bestpractice.com