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Know about Tinea versicolor

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Know about Tinea versicolor

Tinea versicolor is also called as a pityriasis versicolor is a skin eruption on the trunk and proximal extremities. Tinea versicolor is a fungal infection of the skin.  Yeasts which normally found on the human skin become troublesome  grows out of control, which appears as a rash. This yeasts may become trouble some in certain curcumstances like having oily skin, when lives under hot climate, due to lot of sweat, having weak immune system.

Causes : Tinea versicolor are mainly caused by fungus like Malassezia globosa, sometime by  Malassezia furfur

Signs and symptoms

  • White, pink, red, or brown patches on skin which may be lighter or darker
  • Spots or commonly seen on neck, chest, back and arms.
  • Spots also may occurs in different parts of the body
  • Spots that do not tan
  • Spots sometimes may be dry and scaly
  • Spots may  itchy or hurt

The spots may disappear during cool weather and get worse during warm and humid weather.

Risk factors associated with Tinea versicolor

  • family history
  • humid and warm climate
  • excessive sweating
  • some types of cancer
  • medications which weaken the immune system

Diagnosis

  • Basically  tinea versicolor diagnosied by rashes, on focussing uv light ray affected areas appear a fluorescent yellow-green
  • Tinea versicolor may be diagnosed by a potassium hydroxide (KOH) preparation and lesions may fluoresce copper-orange when exposed to Wood’s lamp
  •  The differential diagnosis for tinea versicolor infection includes
    • Progressive macular hypomelanosis
    • Pityriasis alba
    • Pityriasis rosea
    • Seborrheic dermatitis
    • Erythrasma
    • Vitiligo
    • Leprosy
    • Syphilis
    • Post-inflammatory hypopigmentation

Treatment

  • Tinea versicolor are treated by applying particular creams, lotions, or shampoos.
  • Topical antifungal medications containing selenium sulfide are often recommended.
  •  ketoconazole or fluconazole in a single dose, or ketoconazole for seven days, or itraconazole can be used as Oral antifungals

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