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T&D 1 exam 2 > Viral exanthem > Flashcards

Flashcards in Viral exanthem Deck (11)
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1

Molluscum contagiosum

Pox virus

umbilicated

no systemic manifestations

Heals on its own

2

Hand-foot-mouth disease

Coxsackievirus A type 16
Enterovirus 71

macular to vesicular w/ erythematous halo
tender, fades w/o pigment

vomiting and cns sx (rare)

3

HSV1, 2

latent in ganglia

mucocutaneous
"Dewdrop on a rose petal"
rapid rupture --> leaves gray-white ulcer
painful

4

Varicella Zoster

HHV-3
Acute - spreads via resp route

Varicella
- dif stages at same time (macule -- papuple -- vesicles -- crusted papule)
2 dose vaccine around age 1


Zoster
- single, unilateral dermatomal distribution
neuralgia
Centripetal
Pain management!
1 dose vaccine greater than 50 yo

5

Roseola infantum

HHV-6

Acute febrile illness w/ or w/o rash

high fever --> rash --> fever resolves

rash: neck/trunk --> extremities

less than 3 yo: febrile seizures

6

HHV-7

95% adults
ubiquitous
assoc w/ Pitryiasis rosea

7

HHV-8

--> Kaposi Sarcoma: vasc. malignancy assoc w/ AIDs

8

Measles (Rubeola)

Paramyxovirus


Unvaccinated children. Endemic areas.

Prodromal phase: 3 C's
Cough
Coryza
Conjunctivitis

fever greater than 104 --- Rash
spread: resp droplets

Most contagious!

Mucocutaneous:
- Koplik spots on buccosal mucosa. BEFORE the rash

Rash - forehead to trunk/extremities

"Grains of salt surrounded by a red halo"


Complications: pneumo, otitis media, myocarditis, subacute sclerosing panencephalitis. (immunocompromised)

VitA
MMR vaccine
strictly human virus -- eradication possible

9

Rubella (German measles)

Toga virus

"little red"

spread transplacentally/resp droplets

milder sx than measles

Complications;
- Spontaneous abortion
- Congenital rubella:
-- Cataracts, heart disease, deafness
-- microcephaly (w/in 1st 8 wks of pregnancy)

"Blueberry muffin lesions" --> EMH

10

Erythema infectiosum

Parvovirus B19

"Fifth disease"
replicates in erythroid precursors (affects reticulocytes, platelets, and Hb)

"slapped cheek". fades
rash on proximal extremities/trunk -- Classic lacelike reticular pattern after fading

spread: resp secretions
age: 4-10

Adults: arthralgia

Complications
- aplastic crisis in anemic, imm comp ptns
- preggo: - non-imm fetal hydrops, fetal demise

Self limited in healthy ptns

11

Small pox

Variola virus

Eradicated

Contagious
Fever, vesicular + pustular eruption, high mortality, Bioterrorism