Which group has the highest prevalence of psoriasis?

Scandinavians are known to have the highest prevalence of psoriasis compared to other ethnic groups. Studies indicate that this group exhibits a higher genetic predisposition to the condition, likely due to a combination of environmental and hereditary factors. The prevalence rates in Scandinavian populations can reach as high as 3-5%, which is notably higher than in other racial or ethnic groups.

In contrast, other populations such as African Americans, Asians, and Native Americans generally have lower rates of psoriasis. Research suggests that genetic factors, environmental influences, and lifestyle factors play a significant role in the variation of psoriasis prevalence among different ethnic groups. Thus, the higher prevalence among Scandinavians underscores the importance of considering genetic predisposition when studying the epidemiology of psoriasis.