Viral Exanthems

Question 1

“slapped cheek”, pruritic, maculopapular, erythematous, starts on arms and spreads to trunk and legs, worsens with fever and sun exposure, low to no fever

Answer 1

Erythema infectiosum

“fifth disease”

Parvovirus B19

Question 2

erythematous, maculopapular rash, spreads from head to toe, high fever

Answer 2

measles

Paramyxovirus

Koplik spots

Vitamin A treatment may help

Question 3

erythematous, tender, maculopapular rash, spreads head to toe, low grade fever, not ill appearing

Answer 3

rubella

rubella virus

posterior auricular lymphadenopathy

Question 4

maculopapular rash appears as fever breaks, trunk to face and extremeties, <24 hours, acute high fever, no other symptoms for 3-4 days

Answer 4

roseola infantum

HHV-6 and 7

Question 5

generalized, pruritic, “teardrop” vesicles on red base, lesions at different stages of healing, face to rest of body, spares hands and feet, mild fever, anorexia and malaise precede the rash by 24 hours

Answer 5

varicella

VZV

Question 6

pruritic “teardrop” rash in a dermatomal distribution

Answer 6

varicella zoster

VZV

reactivation of varicella infection

along an affected sensory nerve

Question 7

oral ulcers, maculopapular vesicular rash on the hands and feet and sometimes on the buttocks, fever, anorexia, oral and throat pain

Answer 7

hand-foot-and-mouth disease

coxsackie A