Impetigo

Question 1

Common symptoms?

Answer 1

large vesicles, reddish spots clustered around nose, lips and flexures, blisters ooze and burst, forming a yellow honey-color crust

Question 2

bacterial cause of non-bolus impetigo?

Answer 2

S. pyogenes

Question 3

first line tx for non-bolus impetigo

Answer 3

topicals - mupirocin or fusidic acid x 7-10 days

Question 4

bacterial cause of bolus impetigo (widespread)

Answer 4

S. aureus

Question 5

1st line for bolus impetigo?

Answer 5

cephalexin x 7-10 days

alternatives: clindamycin, doxycycline, erythromycin, cloxacillinI

Question 6

If recurrent impetigo occurring inside the nose, what could be used?

Answer 6

use a swab to apply mupirocin or fusidic acid TID intranasally x 3 days

Question 7

What population is primarily affected by impetigo?

Answer 7

children

Question 8

Risk factors?

Answer 8

neonates, young children, broken skin, close contact with patients with active lesions, hot/humid weather, comorbidities (HIV, diabetes, malnutrition)

Question 9

nonbullous impetigo + MRSA suspected?

Answer 9

doxycycline or clindamycin or SMX/TMP

Question 10

what is bullous impetigo?

Answer 10

fluid-filled vesicles, rupture easily, brown crusting, spontaneously can resolve in 2-3 weeks without scaring.

common areas: trunk, body folds