Download Christmas Tree Herald Patch Pityriasis Rosea PNG. Authoritative facts from dermnet new zealand. Pityriasis rosea is a type of skin rash.
Although it can occur at any age, it is seen most patches sometimes spread to the neck but rarely to the face.
This is then followed, days to weeks later, by a rash of many similar but smaller round or oval lesions, mainly on the trunk and upper limbs. Pityriasis rosea is a skin disease that is common in the general population and over the last several years has become known as the christmas tree rash. It starts with one large round or oval scaly patch. While the rash isn't dangerous, it can cause substantial discomfort to those affected by it.