Tinea Versicolor (Pityriasis Versicolor)

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What is Tinea Versicolor?

  • A common, harmless skin condition caused by a fungus.

  • It is also called pityriasis versicolor.

  • Most common in teenagers and young adults.

  • Not contagious — cannot spread to others. Your child can attend school and participate in sports and other activities.

  • The fungus lives on everyone's skin; in some people it overgrows and causes a rash.


What does it look like?

  • Patches of different-colored skin.

  • Usually on the neck, upper back, chest, and shoulders.

    • On lighter skin:

      • Patches often look pink or light tan.

      • In summer, the patches don’t tan so they look lighter than the surrounding skin.

      • In winter, patches may look darker or a pinkish-brown.

    • On darker skin:

      • Patches may appear as dark brown areas OR well-defined lighter areas.

      • It can look like vitiligo or eczema.

  • Patches vary in size and can have a fine, dry scale.

How Is It Diagnosed?

  • Usually diagnosed by looking at the skin.

  • Sometimes additional tests may be done:

    • KOH prep - a small amount of the scale is scraped off and examined under a microscope.

    • Wood’s lamp - a special UV light makes the patches glow yellowish-green.

How Is It Treated?

Your child’s healthcare provider will recommend the best option.

  • Medicated shampoos applied to the skin:

    • Selenium sulfide 1%

      • Apply to affected skin and 2-3 inches around the spots, leave it on for 10-30 minutes, then rinse.

      • Use once daily for 7 days

      • May cause skin dryness.

    • Ketoconazole

      • Apply to damp skin and lather, leave it on for 5 minutes, then rinse.

      • Use once daily for 3 days.

    • Pyrithione Zinc

      • Apply to affected skin, leave it on for 5 minutes, then rinse.

      • Use once daily for 2 weeks.

  • Anti-fungal creams

    • Best for small areas

    • Used 1-2 times per day for 2-4 weeks.

    • Examples: clotrimazole cream, ketoconazole cream, ciclopirox cream

  • Oral Medications

    • Best for large areas or rashes that keep coming back. Oral medications require a prescription.

How To Prevent Tinea Versicolor From Coming Back

  • It often comes back, especially in warm weather.

  • Once a month, for 3 months, apply the medicated shampoo to the areas that had the rash. Keep it on overnight (8-12 hours) and then shower.

  • If it keeps coming back, use the shampoo once a month every summer.

  • Shower after heavy sweating and exercise.

  • When it is hot or humid, wear loose-fitting cotton clothes.

  • Avoid oily skin products.

What To Expect

  • The rash should stop spreading within 2 weeks of treatment.

  • It can take 6-12 months for the color to even out.

  • Protecting your skin from sun exposure helps the color return to normal faster.

When To Call CPCMG

  • The rash is not starting to improve after 2 weeks of treatment.

  • The rash is spreading or getting worse.

  • The rash covers large parts of the body.

  • There is a change in the way the rash looks.

  • The rash becomes very itchy or painful.

  • Your child appears ill.

  • The rash keeps coming back even though you are taking steps to prevent it.

  • You have other questions or concerns.