skin pathology Flashcards

1
Q

what are the infectious disorders?

A
  • impetigo
  • erysipelas
  • necrotizing fascitis
  • acne
  • ringworm
  • sporotrichosis
  • verruca vulgaris
  • herpes simplex
  • molluscum contagiosum
  • erythema multiforme
  • scabies
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2
Q

impetigo

  • cause
  • at risk
  • manifestation
A

impetigo

  • cause: staph. aureus or strep pyogenes
  • at risk: children
  • manifestation: crusty pustules on face

how to remember:
impetigo = pet
children are at risk because they pet animals and then touch their face and get crusty pustules on their face

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3
Q

erysipelas

  • cause
  • at risk
  • manifestation
A

erysipelas

  • cause: strep A
  • at risk: any
  • manifestation: sharply circumscribed erythematous plaque on face/scalp

how to remember
erysipelas = “e’ry” body can get this

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4
Q

necrotizing fasciitis

  • cause
  • at risk
  • manifestation
A

necrotizing fasciitis

  • cause: many potential organisms
  • at risk: children
  • manifestation: redness, pain evolving into gangrene
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5
Q

acne

  • cause
  • at risk
  • manifestation
A

acne

  • cause: proprionibacterium acnes
  • at risk: variable
  • manifestation: sebaceous glands get plugged and inflamed, resulting in comedones (blackheads) and pustules

vulgaris: younger
rosaceae: central part of face

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6
Q

ringworm (tinea)

  • cause
  • at risk
  • manifestation
A

ringworm (tinea)

  • cause: fungi (not a worm)
  • at risk: children
  • manifestation: red, inflamed, scaly round lesions
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7
Q

sporotrichosis (gardeners disease)

  • cause
  • at risk
  • manifestation
A

sporotrichosis

  • cause: sporotrichum schenckii
  • at risk: any
  • manifestation: painless papule, then open sore
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8
Q

verruca vulgaris (common wart)

  • cause
  • at risk
  • manifestation
A

verruca vulgaris

  • cause: human papilloma virus
  • at risk: any
  • manifestation: small, rough growth resembling a cauliflower or blister
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9
Q

herpes simplex

  • cause
  • at risk
  • manifestation
A

herpes simplex

  • cause: HSV
  • at risk: any
  • manifestation:
    • HSV 1: usually cold sores
    • HSV 2: usually genital herpes
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10
Q

erythema multiforme

  • cause
  • at risk
  • manifestation
A

erythema multiforme

  • cause: usually HSV, sometimes drug induced
  • at risk: any
  • manifestation: target lesions or vesicles on skin and mucous membranes

“stevens-johnson”

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11
Q

molluscum contagiosum

  • cause
  • at risk
  • manifestation
A

molluscum contagiosum

  • cause: poxvirus (MCV)
  • at risk: any - very contagious
  • manifestation: centrally umbilicated (red) papules

“water warts”

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12
Q

scabies

  • cause
  • at risk
  • manifestation
A

scabies

  • cause: sarcoptes scabei
  • at risk: any, more common in children
  • manifestation: itchy rash on hands/wrist, abdomen/groin
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