Diagnosis The disease caused by fungi is called mycosis A presumptive clinical

Diagnosis the disease caused by fungi is called

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Diagnosis The disease caused by fungi is called mycosis A presumptive clinical diagnosis must be confirmed by a laboratory diagnosis methods Diagnosis include: Direct microscopy using KOH Staining Culture on Sabouraud’s Dextrose Agar (SDA) Other tests like serology
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Classification of mycoses according to the affected site Skin mycoses Superficial mycoses Cutaneous mycoses Subcutaneous mycoses Systemic mycoses caused by Primary (usually by dimorphic pathogens) as histoplasmosis, Cryptococcosis Opportunistic pathogen: Aspergillus and candida
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1.Skin Mycoses Superficial mycoses are localized on hair shafts and superficial skin cells . Piedraia hortae c haracterised by brown/black nodules on the scalp hair Cutaneous mycoses affect keratin- containing tissues such as hair, nails and skin Dermatophytoses: (Ring worms,tinea, athlete’s foot ,etc…). Caused by fungi classified as dermatophytes Mainly does not cause systemic disease with rare exceptions Three genera, i.e. Microsporon, Trichophyton and Epidermophyton Sources of these genera(human, animal and soil)
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2.SYSTEMATIC MYCOSes caused by opportunistic Systemic mycoses occur deep within the body and affect many tissues and organs Candida Candida albicans is the most common Stain gram positive Cause many infections like :candidiasis, endocarditis, meningitis and septicemia. Specimens: Swabs or scraping from skin Sputum Exudates Feces
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2.Systemic Mycoses by opportunistic pathogens Opportunistic mycoses are caused by fungi that are not usually pathogenic but they become pathogenic in cases of immunosupression or broad use of antibiotics Aspergillus Aspergillus fumigatus Infects the lung causing aspergillosis Can disseminate to other organs in granulomatous, necrotizing form Specimen: Exudate , Sputum and Lung biopsy.
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  • Fall '19
  • Bacteria, sputum, Opportunistic infection,  Heterotroph, Opportunistic mycoses

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