This patient had pityriasis rosea, an acute inflammatory dermatosis of unknown etiology. Viruses, particularly human herpesvirus 6 and 7, have been suggested as the causative pathogen, but study ... Classically, pityriasis rosea begins as an erythematous, scaly patch on the trunk, known as a herald patch.

Understanding the Context

This large lesion is commonly 2–10 cm in diameter, ovoid, erythematous and slightly raised, ... Pityriasis rosea, a rash that usually appears on the torso, upper arms, thighs, or neck, may sound worse than it really is. The condition has a name that’s hard to say: pit-ih-RIE-uh-sis ROW-zee-ah. In Pityriasis rosea, the type, intensity, size, numbers and duration of the rash may vary with individuals.

Key Insights

In older persons, it may be found in unusual locations, such as the lower body. Ringworm ... No, pityriasis rosea is not contagious. You cannot get it from another person. The cause of pityriasis rosea is not fully known, but experts believe a viral infection that triggers a skin reaction ...

Final Thoughts

TheHealthSite: Pityriasis Rosea 101: Symptoms And Causes Of This Mysterious Skin Rash Although it can occur at any age, Pityriasis Rosea is a common skin disorder that typically affects individuals falling into the age group of 10 to 35 years. It is characterized by the appearance of a ... Pityriasis rosea is a rash that can appear to the eye to be somewhat dramatic. Despite this, the rash is quite mild and tends to clear up by itself without the need for treatment. The rash can affect ... Pityriasis rosea is a skin condition that causes a “Christmas tree” rash.

It starts with one patch, known as the “mother patch,” and branches out with smaller “daughter patches” on other parts of the ... Business Insider: If you have an itchy rash that resembles a Christmas tree, you may have a common skin condition called pityriasis rosea Pityriasis rosea is a common skin condition that causes a set of temporary red, scaly rashes. These mild rashes aren't contagious and usually clear up without medical treatment in 10 weeks or less. To ...