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 ...
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 ...