Epidemiology
The overall prevalence of PR in the United States has been estimated to be 0.13% in men and 0.14% in women. It most commonly occurs between the ages of 10 and 35. It is more common in spring.
PR is not viewed as contagious, though there have been reports of small epidemics in fraternity houses and military bases, schools and gyms.
Read more about this topic: Pityriasis Rosea