Litchman Graham, Nair Pragya A., Syed Hasnain A., Le Jacqueline K.
Sheikh Zayed Hospital, Lahore
Desert Regional Medical Center
Pityriasis rosea (PR), meaning rose-colored scale, is an acute self-limiting papulosquamous disorder. Also known as pityriasis circinata, roseola annulata, and herpes tonsurans maculosus, PR is often distinguished by the development of a slightly raised, oval, scaly patch called the "herald patch." It is later followed by multiple clusters of scaly oval patches on the trunk and proximal extremities in a "Christmas tree" appearance. The skin eruption usually lasts 6 to 8 weeks and although it usually begins with a pathognomic herald patch, some cases are reported that may not exhibit this characteristic finding.
玫瑰糠疹（PR），意为玫瑰色鳞屑，是一种急性自限性丘疹鳞屑性疾病。PR也被称为环状糠疹、环形玫瑰疹和斑状秃发性疱疹，其特征通常是出现一个略隆起的椭圆形鳞屑斑，称为“先驱斑”。随后，躯干和近端肢体上会出现多个鳞屑性椭圆形斑簇，呈“圣诞树”样外观。皮疹通常持续6至8周，虽然通常以典型的先驱斑开始，但也有一些病例报告可能不出现这一特征性表现。
