平均发病年龄为 65 岁。[2]Yeh SW, Ahmed B, Sami N, et al. Blistering disorders: diagnosis and treatment. Dermatol Ther. 2003;16:214-223.http://www.ncbi.nlm.nih.gov/pubmed/14510878?tool=bestpractice.com 90 岁以上人群的患病率最高;在德国,这个年龄组的年发病率为男性每百万 398 例(CI:360 至 439)新发病例,女性每百万 87 例(CI:70 至 108)新发病例。 超过 60 岁后,风险迅速增加。[6]Jung M, Kippes W, Messer G, et al. Increased risk of bullous pemphigoid in male and very old patients: A population-based study on incidence. J Am Acad Dermatol. 1999;41:266-268.http://www.ncbi.nlm.nih.gov/pubmed/10426901?tool=bestpractice.com 确诊时的患者年龄对预后有显著影响。[21]Joly P, Benichou J, Lok C, et al. Prediction of survival for patients with bullous pemphigoid: a prospective study. Arch Dermatol. 2005;141:691-698.http://www.ncbi.nlm.nih.gov/pubmed/15967914?tool=bestpractice.com[22]Rzany B, Partscht K, Jung M, et al. Risk factors for lethal outcome in patients with bullous pemphigoid: low serum albumin level, high dosage of glucocorticosteroids, and old age. Arch Dermatol. 2002;138:903-908.http://www.ncbi.nlm.nih.gov/pubmed/12071817?tool=bestpractice.com