Staphylococcal Scalded Skin Syndrome
- A spectrum of generalized exfoliative skin disease with blistering of the upper layer of skin caused by an epidermolytic toxin produced by certain strains of Staphylococcus aureus
- In neonates and young infants, also known as Ritter disease or pemphigus neonatorum
- Classically described as skin tenderness and erythema, with bullae formation and desquamation
- Severity of the disease ranges from
- Few blisters localized to site of infection
- Mild illness with desquamation of skinfolds following impetigo
- Generalized severe exfoliation involving much of the body (typically seen in neonates)
- Classic staphylococcal scalded skin syndrome (SSSS): tenderness, erythema, desquamation, or bullae formation; may resemble scalding injury
- Most cases occur in neonates and children <5 years of age, although can occur at any age.
- Rare in adults due to increased circulating antibodies and adult kidney excretion of the toxin
- No differences in incidence based on gender in children; however, in adults, the male-to-female ratio is 2:1.
- Increased incidence in children reported during summer and fall months
- Immunocompromised state (in children or adults)
- Maternal antibodies transferred via breast milk are partially protective, but neonatal cases can still occur.
- Increased S. aureus carriage and susceptibility to toxin (usually in adults)
- Renal impairment either due to immature renal clearance of toxin in children or underlying renal disease
- Good hand hygiene practices, including adherence to contact precautions in hospitalized patients, to prevent spread from asymptomatic carriers
- Prevent skin from becoming overly moist or macerated.
- Isolation of hospitalized patient
- Suspected or documented cases should be placed in contact isolation.
- Results from S. aureus infection and subsequent exfoliative toxin production
- Exfoliative toxins circulate throughout the body, causing blisters at sites distant from the infection.
- Destruction of protein desmoglein 1 (attachment protein found only in the superficial epidermis) by exfoliative toxin A (ETA) and exfoliative toxin B (ETB) causes intraepidermal splitting leading to bullae development and skin desquamation.
Exfoliative toxin released by S. aureus:
- Two major serotypes of the toxin: ETA and ETB
- Mostly caused by S. aureus belonging to phage group II, types 71 and 55
- Normal skin colonization with S. aureus with break in skin leading to systemic infection
- Skin and soft tissue infections or abscesses
- Bullous impetigo
There's more to see -- the rest of this topic is available only to subscribers.