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dERMA

Discussion in 'Spot Diagnosis' started by Egyptian Doctor, Feb 19, 2013.

  1. Egyptian Doctor

    Egyptian Doctor Moderator Verified Doctor

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    What is your medical diagnosis ?


    Derma.jpg
     

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  2. neo_star

    neo_star Moderator

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    that's Tinea versicolor caused by M furfur

    how to differentiate it from vitiligo ?

    gently scrape it and then look carefully with a magnifying glass in good light ( light that mimicks daylight )....u will see fine scales. This is called the 'scratch sign' or 'Besnier's sign'

    Occassionally, lesions may be variously colored as reddish brown, dark brown or black and hence the name versicolor i.e variously colored.


    under wood's lamp they would fluoresce - golden yellow

    tinea_versicolor_1_030922.jpg ....can't help it, that's what the books say P:

    scraping the scales and then mounting in 10 % KOH is more than enough to confirm the diagnosis


    pas_skin_m_furfur.jpg 'spaghetti and meatballs' appearance

    spaghtti = hyphae and meatballs = spores

    Now the above specimen is stained with PAS, but u can see it without staining as well....just scrape the lesion, with a glass slide, then stick a cello tape over the lesion, pour some kOH over a glass slide and stick the cello tape over it (it now contains the scales from the lesion) and observe under microscope


    Prescribe topical ketoconazole body shampoo and call back in
    3 weeks. Also advice loose clothing...if lesions persist after 3 weeks, then systemic antifungals.



     

    Last edited: Feb 19, 2013
  3. Hasan

    Hasan Bronze Member

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    pytiriasis versicolor
     

  4. Egyptian Doctor

    Egyptian Doctor Moderator Verified Doctor

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    Answer : pytiriasis versicolor

     

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