viral skin infections and viral xanthems Flashcards

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0
Q

all warts are caused by

A

HPV

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1
Q

the only reason you biopsy a genital wart is to

A

check for cancer

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2
Q

30-40 types of HPC produce

A

anogenital warts

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3
Q

15-20 types of HPV are

A

cancerous

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4
Q

in F<30, HPV is

A

transient

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5
Q

in F>30, HPV is

A

persistant and can turn to cervical cancer

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6
Q

what do you protect HPV with

A

gardasil

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7
Q

appearance of warts

A

raised projection with blood vessels
uniform mosaic pattern from above
hyperkeratotic surface with papillomatosis

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8
Q

scale removal of warts shows

A

punctuate vessels (vs corn which has smooth base)

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9
Q

non-uniform pattern found in

A

seborrheic keratosis

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10
Q

plantar warts

A

similar to corn/callus, but their base with punctuated microhemorrhages is diagnostic

*remove only if painful

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11
Q

digitate warts

A

digits, occurs on thin skin surface

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12
Q

genital warts

A

warts spread rapidly on moist mucous surfaces, but are also easy to treat

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13
Q

plane or flat warts

A

hard to treat

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14
Q

anal warts in kids

A

suspect abuse

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15
Q

seborrheic keratosis

A

benign skin growth- not viral

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16
Q

pearly penile papules

A

anatomy variant of normal (angiofibroma) that may wart

17
Q

molluscum contagiosum

A

multiple dome shaped pink papules

umbillicated and contain a caseous plug

18
Q

what type of virus is molluscum contagiousum

A

poxvirus

19
Q

when do you frequently get molluscum

A

on chapped, eczema skin–>spreads–>treat eczema first

20
Q

xanthem

A

skin eruption bursting with blood

wide=spread, symmetric, erythematous, discrete or confluent macules and papules that initally do not form scale

21
Q

FIfth disease

A

URI symptoms cuased by B19 parovirus

22
Q

5th disease erythema patterns

A

facial- slapped cheap (spare nasolabial folds)

net pattern erythema- begins on extremities, 2 days after onset of facial erythema to trunks and buttocks

23
Q

when does net pattern fade

A

6-14 days

24
Q

fetal infection of 5th disease

A

can cause death

25
Q

other symptoms of adults with 5th disease

A

poly arthropathy syndrome
itching, arthralgias, arthritis
minimics RA in acute state

26
Q

hand, foot, mouth dz

A

coxsackievirus A16 and enterovirus 71

fever, cough+ cutaneous lesions- hand, feet, buttocks

27
Q

how do hand foot mouth disease lesions look

A

begin as 2-10mm red macule –>later central, gray, oval vesicle develops

28
Q

acquiring HSV

A

most infections are acquired from asymptomatic individuals

29
Q

pathway of HSV

A

enters through skin/mucous surface–>latency in DRG and other tissues–>recurrence where it ravels down nerve from DRG to skin–>outbreak with shedding, but not necessarily with lesions

30
Q

HSV1

A

primary gingibostomatis

31
Q

how does HSV1 present

A

mostly orolabial (cold sores, fever blisters)

32
Q

HSV2

A

recurrent vesicles-scattered, macerated, under foreskin

33
Q

prodrom of HSV2

A

itch, pain

34
Q

what does hSV look like

A

grouped vesicles uniform in silze–>umbilicated pustules–>crusts–>resoultions usually without scarring

35
Q

primary infection

A

6 day incubation–>vesicles over wide area–>fever–>resolves in 2 weeks

*shedding occurs before crust (vesicle/erosion)

36
Q

reactivation of HSV

A

with sunlight, stress, menstruation

37
Q

recurrent hsv infection course

A

prodrome–>grouped vesicles without fever/LAP–>resolve in 5-10 days

38
Q

tx hsv

A

acyclovir for primary-d oes not cure but is suppressive

39
Q

dx of HSV

A

culture virus, blood test, pcr