SM_262a: Bugs and Parasites Flashcards Preview

MSK/Derm > SM_262a: Bugs and Parasites > Flashcards

Flashcards in SM_262a: Bugs and Parasites Deck (25)
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1

KOH is preparation is used to ___

KOH is preparation is used to diagnose skin infections

2

This is ____

This is tinea corporis

 

(branching septate hyphae)

3

This is ____

This is tinea capitis 

4

This is ____

This is tinea versicolor

 

(spaghetti and meatballs)

5

This is ____

This is herpesvirus infection

 

(multinucleated giant cells on Tzanck smear)

6

This is ____

This is scabies

7

Scabies is a ____ infestation caused by ____ that is preferentially distributed to the ____ warm areas of the body

Scabies is a superficial parasitic skin infestation caused by the mite Sarcoptes scabiei that is preferentially distributed to the warm areas of the body

8

Scabies is usually transmitted by _____

Scabies is usually transmitted by skin-to-skin contact

9

Scrotal nodules are ____

Scrotal nodules are scabies unless proven otherwise

10

Scabies ____ may or may not be seen

Scabies scaly linear burrows may or may not be seen

11

Scabies life cycle involves ____

Scabies life cycle involves female mite burrowing into top layers of skin and laying eggs

 

(development from egg to adult mite in 10-14 days)

12

Norwegian scabies has ____ and ____ mites

Norwegian scabies has crusted presentation with thick scaly plaques over most of body and a ton of mites

 

(often misdiagnosed as psoriasis)

13

Scabies necessitates treatment of patient and ____

Scabies necessitates treatment of patient and all close contacts

 

(treated with topical such as permethrin, less frequently transmitted by indirect contact through fomites such as infested bedding or clothing)

14

Body lice can spread ____

Body lice can spread epidemic typhus

15

Head lice necessitate ____

Head lice necessitate physical removal

16

Crab lice are found in the ____

Crab lice are found in the pubic area

17

Ixodes tick transmits ____

Ixodes tick transmits Lyme disease (Borrelia burgdorferi)

18

____ is classic presentation of Lyme disease

Erythema (chronica) migrans is classic presentation of Lyme disease

 

 

(initial erythematous macule / papule enlarges within days to form an expanding annular lesion with distinct red border and partially clearing)

19

Breakfast, lunch, and dinner sign is associated with ____

Breakfast, lunch, and dinner sign is associated with bedbugs

 

(occur on exposed sites such as face, neck, arms, and hands with 2-3 lesions in a row)

20

Bedbugs are hard to destroy because ____, ____, and ____

Bedbugs are hard to destroy because they reside in crevices of bedding / furniture / floors / walls, can travel long distances in search of a human host, and survive for 6-12 months without feeding

21

____ may appear at bedbug bite sites in sensitized individuals

Intensely pruritic papules / papular urticaria / vesicles or bullae may appear at bedbug bite sites in sensitized individuals

22

Avoid spread of bedbugs from hotels by ____

Avoid spread of bedbugs from hotels by not putting suitcase right next to bed

23

____ are required to get rid of bedbugs

Exterminators are required to get rid of bedbugs

 

(dogs can seemingly smell bedbugs, bean leaves trap bedbugs)

24

This is ____, which is caused by ____ and is prevented by ____

This is Tunga penetrans (Tungiasis), which is caused by chigoe flea burrowing into the skin and laying eggs and is prevented by wearing close-toed shoes in the tropics

25

This is ____, which is caused by ____ and is prevented by ____

This is myiasis, which is caused by parasitic ifnestation of the body of a live mammal by fly larvae (maggots) that grow inside the host while feeding on its tissue and is prevented by wearing hats/pants/long sleeved clothing in tropics

 

(bot fly)

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