Some key information about the epidemiology of psoriasis is listed in Table 1.
Variations in psoriasis prevalence are influenced by patient age, geography, and ethnicity, likely due to genetic and environmental differences among populations. Furthermore, estimates of psoriasis prevalence or incidence vary among different studies due to differences in methodology, such as study definitions, design, and sampling techniques.3,6
Table 1. Key psoriasis epidemiology information.