Please confirm topic selection

Are you sure you want to trigger topic in your Anconeus AI algorithm?

Please confirm action

You are done for today with this topic.

Would you like to start learning session with this topic items scheduled for future?

Updated: Apr 7 2017


  • Snapshot
    • A 10-day-old girl is brought to the pediatrician by her mother after noticing multiple blisters. The mother states that some of the blisters have ruptured and left behind a ring of crust. On physical examination there is two 3 cm lesions on her axillae and several smaller bullae without any erythema in the groin. A superficial wound culture grows Staphylococcus aureus. She is subsequently started on topical antibiotics.
  • Introduction
    • Clinical definition
      • superficial contagious bacterial skin infection which can be divided into
        • nonbullous impetigo (most common) which is
          • caused by Staphylococcus aureus or group A streptococci
        • bullous impetigo
          • caused by Staphylococcus aureus toxin which is a
            • localized form of staphylococcal scalded skin syndrome
    • Epidemiology
      • incidence
        • 20.5 per 1000 person-years
        • most common bacterial skin infection in children
      • demographics
        • occurs commonly in children
      • most common pathogen
        • Staphylococcus aureus
        • group A streptococcus
      • most common location
        • on face and arms
      • risk factors
        • summer weather
        • disruption of skin leading to secondary infection of nonbullous impetigo
          • atopic dermatitis
    • Pathophysiology
      • superficial skin blister ruptures and forms a crust
    • Prognosis
      • survival with treatment
        • very good
  • Presentation
    • Nonbullous impetigo
      • physcal exam
        • single red macule or papule → vesicle surrounded by erythema → honey-crusted pustules
    • Bullous impetigo
      • physical exam
        • progression from vesicle → flaccid bullae without erythema → crusted erosion
          • ruptured bullae with yellow collarette from crusts
  • Studies
    • Labs
      • positive Gram stain
      • positive superficial wound culture
  • Differential
    • Herpes simplex virus
      • vesicles on erythematous base (bullous impetigo typically has no erythema)
    • Pemphigus foliaceus
      • erythema with scaling and crusting
  • Treatment
    • Medical
      • topical antibiotics
        • indications
          • local involvement of disease
      • oral antibiotics
        • indications
          • widespread involvement of disease
  • Complications
    • Spread to other members of the family
      • impetigo is highly contagious
      • cover open skin lesions
    • Acute post-streptococcal glomerulonephritis
      • 1-5% of patients with nonbullous impetigo
1 of 0
Private Note

Attach Treatment Poll
Treatment poll is required to gain more useful feedback from members.
Please enter Question Text
Please enter at least 2 unique options
Please enter at least 2 unique options
Please enter at least 2 unique options