Microbiology Chapter 21

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aji
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118453
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Microbiology Chapter 21
Updated:
2011-11-22 04:23:19
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itsaji PHCC
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Microbial Diseases of the Skin and Eyes
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  1. Normal Microbiota of the Skin
    Gram +tive
  2. salt-tolerant bacteria
    • Staphylococci
    • Micrococci
    • Diphtheroids
  3. Aerobes on surface
    Corynebacterium xerosis
  4. Anaerobes in hair follicles
    Propionibacterium acnes
  5. Yeast on skin
    Malassezia furfur
  6. Exanthem
    Skin rash arising from another disease infection
  7. Enanthem
    Mucous membrane rash arising from another disease infection
  8. Skin Lesion - 1cm with fluid
    Vesicle
  9. Skin Lesion - Larger than 1 cm
    Bulla
  10. Skin Lesion - Flat redden lesions
    Macule
  11. Skin Lesion - Raised lesions are called
    Papule
  12. Skin Lesion - Raised lesions with pus are called
    Pustule
  13. Folliculitis
    Infections of the hair follicles
  14. Sty
    Folliculitis of an eyelash
  15. Furuncle
    Abscess; pus surrounded by inflamed tissue
  16. Carbuncle
    Inflammation of tissue under the skin
  17. Impetigo
    crusting (nonbullous) sores, spread by autoinoculation
  18. Scalded skin syndrome
    Bullous impetigo
  19. Staphylococcus epidermidis
    Gram-positive cocci, non-coagulase
  20. Staphylococcus aureus
    Gram-positive cocci, coagulase
  21. Staphylococcal Skin Infections
    • Folliculitis
    • Sty
    • Furuncle
    • Carbuncle
    • Impetigo
    • Scalded skin syndrome
    • Bullous impetigo
    • Impetigo of the newborn
    • Toxic shock Syndrome (TSS)
  22. Streptococcal Skin Infections
    • Streptococcus pyogenes
    • Group A beta-hemolytic streptococci
    • Hemolysins
    • Hyaluronidase
    • Stretolysins
    • M proteins
    • Necrotizing fasciitis
    • Erysipelas
    • Impetigo
  23. Streptococcal Impetigo usually occurs in
    Adult
  24. Staphylococcal Impetigo usually occurs in
    Children
  25. Pseudomonas aeruginosa
    • Gram-negative, aerobic rod
    • Pyocyanin produces a blue-green pus
  26. Infections by Pseudomonads
    • Pseudomonas aeruginosa
    • Pseudomonas dermatitis
    • Otitis externa or “swimmer’s ear”
  27. Buruli Ulcer is caused by ___
    Mycobacterium ulcerans
  28. Classifications of Acne
    • Comedonal (mild) acne
    • Inflammatory (moderate) acne
    • Nodular cystic (severe) acne
  29. Nodular cystic (severe) acne is treated with
    Isotretinoin
  30. Warts - Papillomaviruses removal treatment
    • Cryotherapy (Freezing)
    • Electrodesiccation (Burning)
    • Salicylic acid (Asprin, Acids)
    • Sugery
  31. Monkeypox is prevented by ___
    smallpox vaccination
  32. Chicken pox virus may remain latent in ___
    dorsal root ganglia
  33. Breakthrough varicella occurs in
    chickenpox vaccinated people
  34. Acyclovir may lessen symptoms of
    Shingles
  35. Herpes Simplex HSV-1 can remain latent in ___
    trigeminal nerve ganglia
  36. Measles(Rubeola) virus is transmitted by ___
    respiratory route
  37. Congenital rubella syndrome causes
    severe fetal damage
  38. List of skin rashes
    • 1. Measles
    • 2. Scarlet fever
    • 3. Rubella
    • 4. Filatov Dukes disease (mild scarlet fever)
    • 5. Fifth disease / Erythema infectiosum
  39. Roseola caused by human herpesvirus
    6(HHV-6) & 7(HHV-7)
  40. Dermatomycoses is
    fungal infection of skin
  41. Dermatomycoses also known as tineas or ringworm are
    • Tinea captis (Dandruff)
    • Tinea cruis (Jock itch)
    • Tinea pedis (Athletes foot)
    • Tinea unguium (Nails)
  42. Genera of fungi
    • Trichophyton : Infects hair, skin, and nails
    • Epidermophyton : Infects skin and nails
    • Microsporum : Infects hair and skin
  43. Trichophyton Infects
    hair, skin, and nails
  44. Epidermophyton Infects
    skin and nails
  45. Microsporum Infects
    hair and skin
  46. Fulminating disease can result in
    immunosuppressed individuals, Treatment: Fluconazole
  47. Ophthalmia neonatorum caused by ___
    Neisseria gonorrhoeae
  48. Conjunctivitis commonly caused by ___
    Haemophilus influenzae
  49. Keratitis
    • Inflammation of the cornea
    • Fusarium and Aspergillus (Africa and Asia)
  50. Herpetic keratitis
    • Caused by herpes simplex virus 1 (HSV-1).
    • Infects cornea and may cause blindness
    • Treated with trifluridine
  51. Acanthamoeba keratitis
    Transmitted via water

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