Infectious rashes Flashcards Preview

Olivia MD3 2nd semester > Infectious rashes > Flashcards

Flashcards in Infectious rashes Deck (24):
1

what is petechiae

pinpoint non-blanching spots

2

what is purpura

larger non-blanching spots (>2mm)

3

what virus causes measles?

Morbilivirus

4

what are the other names for slapped cheek?

Fifth disease
Erythema infectiosum

5

what causes hand foot and mouth disease?

coxsackie A virus

6

what is another name for rubella?

german measles

7

Describe the rash in fifth disease

Erythema on cheeks
Lacey appearance
Not itchy
Later macular lacey rash- on Arms/legs/trunk

8

what are the typical associated features with rubella rash?

Tender swollen glands
Arthralgias
Fever

9

describe measles rash

Non itchy rash
Initially macules
Becomes papules
Covers all body- confluent rash
Avoids palms and soles

10

what are some other signs and symptoms seen with measles?

Coryzal symptoms
Cough
Fever
Malaise
Conjunctivitis

11

what are the complications of measles?

Acute OM
Diarrhoea
Pneumonia
encephalitis

12

what causes molluscum contagiosum?

pox virus

13

describe meningococcal rash?

Purpuric rash
May appear like large bruise

14

what are the key complications of meningococcal infection?

meningitis
Sepsis
DIC

--> therefore is a medical emergency

15

describe the lesions often seen in hand foot and mouth disease?

intense yellow-grey vesicles over hands, feet, and can be inside mouth

16

describe progression of rash in chicken pox

Begins as red papules
Progresses to fluid filled vesicles/blisters
Intensely itchy
Varying sizes of lesions
Scabs form after blisters burst

17

how might we diagnose measles?

Nasopharyngeal swab + throat swab--> PCR
Serology IgM and IgG

18

what type of hsv causes lesions on the lips and what type of HSV causes lesions in the genital area?

HSV1- orolabial lesions

HSV2- genital herpes; but now HSV1 can cause genital herpes as well

19

where is the chickenpox rash usually located

usually located on the trunk (chest and back) and face, but then progresses down the arms and legs

20

complications of chickenpox?

secondary cellulitis infection

21

treatment of measles?

supportive management only

22

apart from being a feature of kawasaki disease, what other condition can 'strawberry tongue' be a feature of?

staph/strep toxin mediated syndrome

23

what is the difference between impetigo, erysipelas and cellulitis?

all forms of skin infections, and are caused by similar pathogens (staph and strep)

But their difference lies in which skin layer they affect.

Impetigo= superficial layer of skin
Erysipelas= upper dermis +/- lymphatics
Cellulitis= deeper dermis + subcutaneous fat

24

describe roseola infection in children?

Development of a sudden, high temperature (40°C or higher) which usually lasts about three to five days.

When the temperature drops to normal again, a raised, red rash may appear on the body and spread to the arms and legs. It is seldom seen on the face.

The rash generally last for one to two days and turns white (blanches) when pressed.

Some children will have a high temperature and no rash.