Spongiotic dermatitis tinea


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Spongiotic dermatitis tinea

  1. 1. Spongiotic Dermatitis - Tinea
  2. 2. <ul><li>The most likely diagnosis is? </li></ul><ul><li>Nummular dermatitis </li></ul><ul><li>Psoriasis </li></ul><ul><li>Contact Dermatitis </li></ul><ul><li>Berloqu dermatitis </li></ul><ul><li>Tinea Corporis </li></ul>Question
  3. 3. Spongiotic Dermatitis - Tinea Tinea (ringworm) is a dermatophyte infection of the skin Fungal Infection of body/scalp can occur at any age and is more common in warmer climates
  4. 4. Spongiotic Dermatitis - Tinea There is a broad manifestation of lesion size and location This variability is explained by differences in host immunity and species of fungus
  5. 5. Spongiotic Dermatitis - Tinea In classic ringworm, lesions begin as flat, scaly spots that then develop a raised border extending out in all directions. The central area may become brown or clear, and has less scale than the advancing border
  6. 6. The vesiculobullous reaction pattern - dermatophyte <ul><li>The prototypical lesion of tinea corporis is an annular scaly patch that may occur singularly or in multiple forms </li></ul><ul><li>Frequently polycyclic rings occur. </li></ul><ul><li>Additional features are involvement of the hair follicle with a fungal folliculitis or inflammation with pustules, vesicles, and crusting. </li></ul>
  7. 7. Spongiotic Dermatitis - Tinea <ul><li>Clinically, dermatophyte infections are classified by body region. </li></ul>
  8. 8. Spongiotic Dermatitis - Tinea Tinea Faciale Tinea corporis Tinea cruris Tinea Capitis Tinea Manum
  9. 9. The vesiculobullous reaction patthern - dermatophytosis
  10. 10. The vesiculobullous reaction pattern - dermatophyte <ul><li>Dermatophytes are classified in several ways. The ringworm fungi belong to three genera: Microsporum, Trichophyton, and Epidermophyton. </li></ul><ul><li>The anthropophilic dermatophytes grow only on human skin, hair or nails </li></ul><ul><li>Zoophilic varieties originate from animals, but may infect human. </li></ul><ul><li>Geophilic dermatophytes live in soil but may infect humans. </li></ul><ul><li>KOH prep reveals hyphae </li></ul>
  11. 11. The vesiculobullous reaction pattern -dermatophytosis <ul><li>The dermatophytes include a group of fungi (ringworm) that under most conditions have the ability to infect and survive only on dead keratin, that is, the top layer of the skin , the hair, and the nails </li></ul><ul><li>They cannot survive on mucosal surfaces such as the mouth or vagina where the keratin layer does not form </li></ul><ul><li>Treatment is antifungal creams for tinea corporis </li></ul><ul><li>Oral antifungals for tinea capitis and tinea unguium </li></ul>
  12. 12. <ul><li>This dermatitis best represents </li></ul><ul><li>Vitiligo </li></ul><ul><li>Post inflammatory hypopigmentation </li></ul><ul><li>Psoriasis </li></ul><ul><li>Albinism </li></ul><ul><li>Tinea Versicolor </li></ul>Question
  13. 13. Tinea Versicolor <ul><li>Caused by the yeast Malassezia furfur </li></ul><ul><li>It manifests clinically as white or light brown macules that may be discrete or confluent, on the trunk especially. </li></ul><ul><li>Usually asymptomatic </li></ul><ul><li>May cause some itching </li></ul><ul><li>Chest and back are usual location </li></ul>
  14. 14. Tinea Versicolor <ul><li>Versicolor means multiple colors </li></ul><ul><li>The patches may be hyperpigmented </li></ul>
  15. 15. Tinea Versicolor
  16. 16. Tinea Versicolor
  17. 17. Tinea Versicolor <ul><li>Scales scraped from lesions and placed in KOH may be scrutinized by conventional microscopy </li></ul><ul><li>Short, blunt hyphae and small spores (Spaghetti and meat balls) </li></ul>
  18. 18. Tinea Versicolor <ul><li>Woods light exam helps to evaluate the extent of the disease </li></ul>
  19. 19. Tinea Versicolor - Therapy <ul><li>For localized disease, administration of topical antimycotics, such as azoles, or selenium sulfide in a shampoo eliminates the causative organisms. </li></ul><ul><li>For widespread lesions, oral ketoconazole, itraconazole, or fluconazole is curative </li></ul>