Pityriasis Rosea

Pityriasis rosea (pih-tuh-RY-uh-sis ROH-zee-uh) is a common skin condition that causes patches of your skin to develop raised, scaly rashes. It may appear on any part of your body, but it usually appears on the trunk (torso), arms and legs. “Pityriasis” means “scaly,” and “rosea” means “pink,” but the rashes may look red, gray, brown or purple.

Pityriasis rosea is also known as Christmas tree rash.

Who does pityriasis rosea affect?

Anyone can get pityriasis rosea. You may be more likely to develop it if you’re:

• Between the ages of 10 and 35.
• A woman. Women are 50% more likely to develop pityriasis rosea.

In some cases, people with pityriasis rosea report that they had significant or long-term stress before developing a rash. However, there isn’t enough research to determine that stress may cause pityriasis rosea.

Pityriasis rosea doesn’t usually affect people over the age of 60. However, if it does, the symptoms may last for a longer period.

How does pityriasis rosea affect my body?

Pityriasis rosea commonly affects the skin on your trunk, arms or legs. A variant called inverse pityriasis rosea can affect the skin on your neck, face, armpits (axillae) and groin, though it isn’t common.

Your skin may develop discolored patches (lesions) that look like scales or dry, crinkly paper. The patches may itch.