1 / 10

Medical mycoses

Medical mycoses. cutaneus subcutaneus systemic opportunistic. Intact skin and mucosal surfaces serve as barriers to infection by mycotic agents. Fatty acid,pH,epithelial turnover of the skin Transferrin  to restrict the growth of several fungi.

alima
Télécharger la présentation

Medical mycoses

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Medical mycoses cutaneus subcutaneus systemic opportunistic

  2. Intact skin and mucosal surfaces serve as barriers to infection by mycotic agents. • Fatty acid,pH,epithelial turnover of the skin • Transferrin  to restrict the growth of several fungi. • Superficial fungi dont elicit a cellular response from the host

  3. Etiology • Mallassezia furfur • Pityriasis Versicolor • Lipophillic organism • Lesion: hypopigmented area contain budding yeast cells and hyphae • Asymptomatic • Diagnosis: KOH preparations(skin scrapping)

  4. Dermatophytes • Dermatophytoses(Tinea,ringworm) • Infect keratinized structures • Skin,hair and nail • Invasive properties • May evoke inflamatory reaction • Three genera: - Epidermophyton - Trichophyton - Microsporum

  5. Anthropophillic • Zoophillic • Geophillic Tinea  chronic infection (warm and humid areas of the body) Typical lesion : inflame circular border containing papules & vesicles surrounding a clear area.

  6. Broken hairs and thickened broken nails Trichophyton • tinea capitis in children • Endothrix infections • “favus” tinea capitis in which crusts on the scalp.

  7. Dermatophytid (“id”) reactions - vesicles on the fingers - response to circulating fungal antigens - the lesion do not contain hyphae • Skin test with fungal extracts,eg, trichophytin

  8. The normal skin is generally resistant to invasion by dermatophytes • In conditions of excessive moisture,can invade keratinized structures.

  9. Laboratory diagnosis • Microscopic  KOH preparation scrappings of skin or nail  show hyphae 2. Cultures on Sabouraud’s agar typical hyphae and conidia 3. DNA probes 4. Test for the presence of fungal antigens or antibodies to fungal antigens.

  10. Tinea • Tinea capitis • Tinea barbae • Tinea axillaris • Tinea corporis • Tinea cruris  jock itch • Tinea pedis  athlete’s foot

More Related