Pityriasis Rosea – Symptoms and Causes

ByJanis Updated

Pityriasis rosea is a skin condition that typically appears as a distinctive rash pattern. It often starts with a single larger patch, known as the herald patch, which can be up to 4 inches across.

This initial spot commonly appears on the chest, back, abdomen, or face. Within days or weeks, smaller spots develop across the body.

These spots create a pattern resembling drooping pine tree branches, especially on the trunk and upper limbs. The rash may cause itching in some people.

This condition most frequently affects people between ages 10 and 35, though it can occur at any age. The good news is that pityriasis rosea is not contagious and typically resolves on its own within 10 weeks.

Most cases don’t require treatment, though medicated lotions might help reduce itching and possibly speed up healing. The rash heals without leaving scars and rarely returns after recovery.

Key facts:

  • Begins with a larger “herald patch”
  • Smaller spots follow in a distinctive pattern
  • Usually lasts up to 10 weeks
  • Not contagious
  • Rarely requires medical treatment

Health Writer

Janis's areas of expertise include nutrition, exercise, stress management, and mental health. She is passionate about educating and empowering people to take control of their health and make positive changes that can last a lifetime. Janis believes that small, sustainable changes are the key to long-term success, and she works with her clients to develop personalized plans that fit their individual needs and lifestyles.