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Pityriasis Rosea

more about Pityriasis Rosea

  • Pityriasis rosea is a self-limiting, salmon-colored patch that is followed by a spreading rash.  The lesions are 1-2 cm in diameter, and are firmly attached at their borders and loose in the center, which gives them a cigarette-paper appearance.  They last from 4-12 weeks, occurring more often in spring and fall.

  • A patch (herald) may appear days to weeks before the rash.
  • Mainly on the trunk, sparing the hands, feet, and face
  • Rash is rose-red to brownish-red oval spots that have a fine, scaly appearance with near clear centers.
  • Itching is mild but can be severe.
  • Rarely vesicles (fluid filled raised lesions) or larger lesions are seen.
  • Fever and fatigue rare

  • Etiology unknown
  • Viruses may play a role

  • History:
    1. Symptoms
    2. Illnesses
    3. Habits
    4. Drugs
    5. Medications
    6. Surgeries
    7. Allergies
    8. Family
  • Medical exam:
    1. Your doctor may consult with a dermatologist (skin specialist).
    2. General exam
    3. Skin examined
    4. Scraping of the rash can be stained with KOH to see if fungi are present.
    5. Blood tests may be done if other diseases are suspected (such as Syphilis).
    6. Biopsy -- a piece of lesion can be scraped off or cut and sent for examination under a microscope.

  • None
  • Does not seem to be contagious

  • Symptomatic treatment only
  • Itching:
    1. Oatmeal baths -- warm water and oatmeal can be mixed and applied to skin.
    2. Antihistamines such as Benadryl can help.
    3. Steroid creams such as Triamcinolone work well in areas that are irritated and itching.
    4. Ultra Violet light therapy may help certain patients.
    5. Follow up with the doctor in 1-2 weeks after the visit if rash is still present.

  • Contact the doctor for an exam.

  • Drug rashes
  • Skin diseases:
    1. Psoriasis
    2. Eczema
  • Infections:
    1. Syphilis
    2. Viral rash
    3. Fungus infection -- Tinea Corporis

more about Pityriasis Rosea

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