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Y2 DERM > Skin Infections > Flashcards

Skin Infections Flashcards

1
Q

what toxins produced by s. aureus can affect the skin

A

PVL, SSST

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2
Q

what is the commonest infecting organism in cellulitis

A

s. aureus

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3
Q

which skin layer is infected in cellulitis

A

dermis

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4
Q

what infecting organisms are found in impetigo

A

s. aureus or s. pyogenes

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5
Q

what are the infecting organisms in boils and carbuncles

A

s. aureus

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6
Q

what skin layer is erysipelas

A

epidermis, more superficial than cellulitis

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7
Q

what is the infecting organism in erysipelas

A

s. pyogenes

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8
Q

what is the management of s. aureus skin infections

A

fluclox

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9
Q

what is the management of impetigo

A

topical fluclox

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10
Q

what is the common infecting organisms in necrotising fasciitis

A

s. aureus PVL or s. pyogenes

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11
Q

what clue in the history is suggestive of necrotising fascitis

A

disproportionate pain

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12
Q

what is the management of s. pyogenes skin infections

A

PO penicillin

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13
Q

what is management options of candidiasis / thrush

A

TOP clotrimazole
PO fluconazole
nystatin

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14
Q

what is the management of the fungal infection pityriasis versicolor

A

ketoconazole

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15
Q

what is a dermatophyte

A

a fungi requiring keratin

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16
Q

how is ringworm diagnosed

A

clipping/scraping for microscopy/culture

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17
Q

what type of infection is ringworm

A

dermatophyte fungus

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18
Q

what is the management of ringworm on the skin

A

TOP clotrimazole

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19
Q

what is the management of ringworm on the nail

A

PO terbinafine

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20
Q

what is the management of ringworm on the scalp

A

PO terbinafine or itraconazole

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21
Q

what type of pathogen is rubella

A

virus

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22
Q

how is rubella diagnosed

A

rubella IgM antibody

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23
Q

what is the major risk in rubella

A

fetus damage

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24
Q

what is the presentation of rubella

A

fever, arthralgia, erythema, cervical lymphadenopathy, sof palate petechial haemorrhages

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25
what is the likely cause of a fleshy firm 1-2mm pearly nodule on a child
molluscum contagiosum
26
what is the infecting organism in molluscum contagiosum
pox virus
27
what is the management of molluscum contagiosum
self limiting over a few months
28
what is the presentation of herpangina
blisters on the back of mouth and feever
29
what is the infecting organism in herpangina
enterovirus coxsackie/echo
30
how is herpangina diagnosed
PCR swab
31
what is the management of herpangina
self limiting
32
what is the diagnosis for a middle age sheep farmer but a firm fleshy nodule on his hands
orf
33
are any investigations required for orf
no
34
what is the management of orf
self limiting
35
describe the evolution of the rash in chickenpox varicella
macular > papular > vesicular
36
describe the pattern of the location of chickenpox varicella
centripedal: denser on torso
37
what is the pattern on transmission for chickenpox varicella
droplet spread
38
what factors increase the likeliness of chickenpox varicella having severe infection
neonate or old
39
what is the presentation of chickenpox varicella
fever, itchy rash
40
what is the management of chickenpox varicella
self limiting
41
what are the complications of chickenpox varicella
bacterial pneumonitis, scar, encephalitis
42
what is the other name for slap cheek
erythema infectiosum
43
what is the infecting agent in slap cheek aka erythema infectiosum
parvovirus B19
44
how does slap cheek aka erythema infectiosum affect adults
small joint arthritis + rash
45
how is slap cheek aka erythema infectiosum diagnosed
IgM antibody
46
why does shingles zoster infections recur
virus remains latent in dorsal root sensory ganglia
47
what is the presentation of shingles zoster
dermatomal erythematous vesicles + neuralgia
48
what is a red flag in shingles zoster and why
CNV1 ophthalmic division affected since sight threatening (urgent ophtho referral)
49
what is ramsay hunt syndrome
a complication of shingles zoster causing CNVII palsy and ear symptoms
50
what is the management of shingles zoster
PO acyclovir + tramadol for pain relief
51
what is a complication of shingles zoster and how does it present
post-herpetic neuraliga; trigeminal pain for >4wk
52
what is the infecting agent in hand warts
human papilloma virus
53
what is the management of hand warts
self limiting, TOP salicylic acid or cryotherapy
54
how does human papilloma virus affect the feet
verruca
55
what is gingivostomatitis
the initial presentation of herpes simplex virus infection
56
what type of herpes simplex virus causes oral lesions
HSV1
57
give 2 complications of herpes simplex virus infection
erythema multiforme, encephalitis
58
what is the aetiology of erythema multiforme
drugs or herpes simplex
59
describe the rash in erythema multiforme
target lesions
60
how is herpes simplex virus diagnosed
swab for virus PCR
61
what is the management of herpes simplex virus infection
acyclovir when actively replicating
62
what is the management of scabies
malathoin lotion, benzyl benzoate, isolation
63
what type of scabies can occur in immunocompromised patients
crusted scabies
64
what is the medical name for head lice
pediculus capitis
65
what rash does lyme disease cause
erythema migrans
66
how is lyme disease diagnosed
clinical diagnosis
67
what is the management of lyme disease
doxycyline

Y2 DERM (11 decks)

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