- Represents 10-30% of Impetigo cases
- Affects infants (esp. newborns) and young children
- Less contagious than NonBullous Impetigo
- Most common cause of ulcerative buttock rash in infants
- Unlike NonBullous Impetigo, Bullous Impetigo is caused only by staphyococcus aureus
- Staphylococcal toxin-mediated reaction
- Staphylococcal Infection with Phage Group 2
- Local variant of Staphylococcal Scalded Skin Syndrome
- Symptoms
-
Systemic symptoms in less typical cases
- Distribution
- Intertriginous areas (diaper, axilla, neck)
- Characteritics
- Onset with vessicles enlarging quickly to bullae
- Flaccid bullae, 1-2 cm diameter with sharp margins
- No surrounding erythema (unlike nonbullous form)
- Bullae break leaving characteristic appearance
- Thin yellow serous crust
- Small rim of Blister roof at edge of lesion
- Pathognomonic Signs (Collarette Sign)
- Collar of scale forms around ruptured Blister roof
- Self-limited, non-scarring
- Resolves within 2-3 weeks
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