Testing & Diagnosis for Pityriasis Rosea in Children

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How is pityriasis rosea diagnosed?

Pityriasis rosea is usually diagnosed based on a medical history and physical examination of your child. Due to the uniqueness of the pityriasis rosea rash, your child's physician can typically make a diagnosis based on a simple physical examination. Your child's doctor may also order the following tests to help aid in the diagnosis:

  • blood tests
  • skin biopsy - the removal of some of the diseased skin for laboratory analysis

The sample of skin is removed after a local anesthetic is administered

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