Infectious derm 1 Flashcards Preview

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Flashcards in Infectious derm 1 Deck (84):
1

What is an exanthem?

Rash that appears abruptly and involves several areas of skin at once

2

What is an enanthem?

An eruption upon a mucous membrane

3

What are the 6 examthems of childhood?

1 = rubeloa
2 = Scarlet fever
3 = rubella
4 = Staph scalded skin syndrome
5 = Erythema infectiosum (slapped cheek)
6 = Exanthem subitum

4

What is the cause of first disease?

Rubeola )measles

5

What is the cause of second disease?

Strep pyogenes

6

What is the cause of third disease?

Rubella (german measles)

7

What is the cause of fourth disease?

Coxsackie or echo
OR
Staph aureus

8

What is the cause of fifth's diseasE?

Parvovirus B19

9

What is the cause of sixth disease?

HHV6

10

What are the three Cs of measles?

Cough
Coryza
Conjunctivitis

11

What are the exanthem like with measles?

Erythematous macules and papules which being on the face and spear cephalo-caudad centrifugally

12

What are the complications from measles?

-Encephalitis leading to MR
-URI issues

13

What is the usual course for measles?

Improve within 2 days of rash onset, but lasts 7-14 days

14

What are the prodrome s/sx of rubella?

ILI with conjunctivitis and LAD

15

What are the exanthem like with rubella?

Pruritic, pink to red macules and papules that being on the face and spread to the neck, trunk, and extremities over 24 hours

16

What are the enanthem of rubella?

Petechial lesions of soft palate and uvula

17

What is the rash like with fifth's disease? What classically makes it worse?

Slapped cheeks + lacy rash

Made worse with heat

18

What is the difference in progression of measles vs chickenpox?

Measles = all change at same time

19

What are the major complications from rubella?

Fetal:
-Cataracts
-Sensorineural deafness
-PDA

20

What is the progression of the exanthem with erythema infectiosum?

Starts with bright red cheeks, then progressing to a reticular rash that appears on the trunk and extremities

21

When are children most infectious with erythema infectiosum?

Before the onset of the rash

22

What is the cause of erythema infectiosum, and how is it spread?

Parvovirus b19--respiratory secretions, or vertical transmission to the fetus

23

What ages most commonly get erythema infectiosum?

4-10 years

24

What are the adult s/sx of erythema infectiosum?

Arthralgias

25

How long may the rash persist for with erythema infectiosum? What classically makes it worse?

weeks to months
Sunlight, hot temps

26

What is the other name, and cause of sixth's disease?

Exanthem subitum
HHV 6

27

What are the prodromal s/sx of exanthem subitum?

Higher fever
palpebral edema
URI

28

What is the exanthem like with exanthem subitum?

Pink macules and papules surrounded by white halos

begins on the neck and spread to proximal extremities

29

Name the disease:
-Pink macules and papules surrounded by white halos
-begins on the neck and spread to proximal extremities

Exanthem subitum

30

What is the age range that is usually affected with exanthem subitum?

6 months - 4 years

31

What is the most common exanthem before age 2?

Exanthem subitum

32

True or false: latent HHV 6 often causes reactivation s/sx

false--only if immunocompromised, or with drug reaction (usually)

33

What are the prodromal s/sx of hand-foot-and-mouth disease? (3)

Fever
Severe Sore throat
Malaise

34

What is the progression of the rash like with hand foot and mouth disease?

1. Bright pink macules and papules
2. painful vesicles with erythematous halos,
3. erosions with surrounding edema

35

name that disease's rash:
1. Bright pink macules and papules
2. painful vesicles with erythematous halos,
3. erosions with surrounding edema

Hand foot and mouth disease

36

What is the distribution of the rash in hand foot and mouth disease?

Starts in the mouth, later on hands and feet

37

What are the enanthem of hand foot and mouth disease?

erythematous erosions, resembling canker sores

38

what causes hand foot and mouth disease?

Coxsackievirus a16 or enterovirus or echovirus

39

True or false: hand foot and mouth disease is highly infectious

True

40

When in the year is the incidence of hand foot and mouth disease the highest?

Late summer and early fall

41

What other diseases do coxsackieviruses cause besides hand foot and mouth disease?

Carditis and pleuritis

42

How long does hand foot and mouth disease last for?

resolves within 10 days

43

What is the prodrome of varicella?

asymptomatic to ILI

44

What is the rash like with varicella?

Progresses from macules to papules, to vesicles over 12-24 hours. Tends to start on the face, then move to trunk

45

Name the rash: Progresses from macules to papules, to vesicles over 12-24 hours. Tends to start on the face, then move to trunk

Varicella

46

What is the incubation period for varicella?

2-3 weeks

47

What is the infectious agent with molluscum contagiosum?

dsDNA poxvirus

48

What is the only DNA virus that replicates in the cytoplasm?

poxvirus

49

What are the lesions like with molluscum contagiosum?

Umbilicated, dome shaped papules that may autoinoculate from one part of the body to another

50

How long do the lesions with molluscum contagiosum last for?

6-9 months

51

What is the treatment for molluscum contagiosum in adults? What about for children?

Liquid nitrogen

Child = conservative therapy

52

What is variolae?

Smallpox (poxviridae)

53

What is Gianotti-Crosti syndrome?

Self limited cutaneous response to various immunological triggers, caused by Hep B, EBV, others

54

What are the prodromal s/sx of Gianotti-Crosti syndrome?

Diarrhea or URI

maybe HSM or LAD

55

What is the rash like with Gianotti-Crosti syndrome? Where on the body is it found?

-Monomorphous pink to red-brown papules or papulovesicles that is pruritic
-Symmetric on face, extensor surfaces

56

What is the better name for Gianotti-Crosti syndrome?

Papular acrodermatitis of childhood

57

What is the age range that Gianotti-Crosti syndrome is seen in?

6 mo - 15 years

58

what is the treatment for Gianotti-Crosti syndrome?

Steroids for pruritis

59

How long does the rash last for with Gianotti-Crosti syndrome?

10-60 days

60

What is pityriasis rosea?

URI precedes it, but Rash that presents with a "herald rash" followed by a full body rash.

61

What is the age range that gets pityriasis rosea?

10-35 years

62

What is the *prodromal* rash with pityriasis rosea?

Tinea corporis-like with peripheral scaling and central clearing

63

What is the rash like with pityriasis rosea?

Christmas tree pattern that is salmon colored and mildly pruritic

64

Christmas tree pattern that is salmon colored and mildly pruritic = ?

pityriasis rosea

65

What layer of the skin does HPV infect?

Basal the keratinocytes

66

What are the HPV types for: verrucae vulgaris (2)?

2
4

67

What are the HPV types for: verrucae plana (2)?

3
10

68

What is the HPV type for: palmoplantar warts (1)?

1

69

What do common warts look like?

cauliflower

70

What do flat warts look like?

flat topped and less keratotic
Flesh colored

71

What do palmoplantar warts look like?

Thick, endophytic papules

72

What are the mosaic warts of the palmoplantar variety?

Plantar warts coalescing into large plaques

73

What are the symptoms of palmoplantar warts?

Pain with weight bearing

74

What do genital warts look like?

hyperkeratotic or dermal flesh colored papules that vary in size from 1 mm to 10 cm

75

What are the two ways that drugs kill warts?

Stimulate immune system or destroy

76

What should be done if mom is having an active outbreak of HSV prior to delivery?

C-section

77

What is the rash like with shingles?

erythematous macules and papules which progress to vesicles within 12-24 hours, and then pustules

78

true or false: the pain usually precedes the rash with shingles

True

79

What is the rash that is had with kaposi's sarcoma?

Erythematous macules or papules that develop into violaceous plaques and nodules

80

Erythematous macules or papules that develop into violaceous plaques and nodules = ?

Kaposi's sarcoma

81

What is erythrasma? What does it look like?

Chronic bacterial infection caused by corynebacterium, that tends to affect the toes, groin, and axilla

Presents as a red spot/patch that is sharply demarcated

82

What are the symptoms of erythrasma?

Pruritic

83

What is the treatment for erythrasma? (2)

Wash with benzoyl peroxide, followed by topical erythromycin

84

What will a Wood's lamp show with erythrasma?

Coral Red fluorescence