Staphylococcal Scalded Skin Syndrome (SSSS)

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Questions and Answers

Staphylococcal Scalded Skin Syndrome (SSSS) is primarily mediated by what bacterial virulence factor?

  • The formation of bacterial biofilms on the skin surface
  • Exfoliative toxins produced by _Staphylococcus aureus_ (correct)
  • An IgE-mediated hypersensitivity reaction to _Staphylococcus aureus_
  • Direct bacterial invasion and destruction of tissue

A neonate presents with a widespread, painful rash and superficial blisters. Gentle pressure on the skin causes the epidermis to separate from the underlying dermis. What is the most likely diagnosis?

  • Tinea corporis
  • Impetigo
  • Contact dermatitis
  • Staphylococcal Scalded Skin Syndrome (SSSS) (correct)

Why are bacterial cultures of blister fluid from a patient with Staphylococcal Scalded Skin Syndrome typically negative?

  • Antibiotics in the bloodstream rapidly kill any bacteria present in the blisters
  • The causative bacteria are intracellular and cannot be cultured
  • The blisters are caused by toxins, not by the bacteria themselves (correct)
  • The blisters are sterile and only contain host immune cells

What is a key clinical feature differentiating Staphylococcal Scalded Skin Syndrome from bullous impetigo?

<p>The presence of bacteria within the blister fluid in impetigo (C)</p> Signup and view all the answers

Which patient population is most likely to experience a high mortality rate from Staphylococcal Scalded Skin Syndrome (SSSS)?

<p>Immunocompromised adults (A)</p> Signup and view all the answers

A child is diagnosed with Staphylococcal Scalded Skin Syndrome (SSSS). What pathogenic mechanism is primarily responsible for the skin sloughing observed in this condition?

<p>Toxin-mediated disruption of desmosomes in the stratum granulosum (D)</p> Signup and view all the answers

A patient has a suspected case of SSSS. What physical exam finding would help confirm your suspicion?

<p>A positive Nikolsky sign (C)</p> Signup and view all the answers

After diagnosis of SSSS, a 3 year old is expected to make a full recovery in 1 week and be discharged. However, the patient is still showing signs of the disease after 2 weeks. Which factor could be responsible?

<p>The patient is immunocompromised (B)</p> Signup and view all the answers

A patient is suspected of having SSSS, what common symptom can you observe to help confirm the diagnosis?

<p>Skin redness around the mouth (C)</p> Signup and view all the answers

What immunological process leads to the resolution of Staphylococcal Scalded Skin Syndrome (SSSS)?

<p>Antibody neutralization of the exfoliative toxins (D)</p> Signup and view all the answers

Flashcards

Staphylococcal Scalded Skin Syndrome (SSSS)

A skin condition caused by Staphylococcus aureus strains that produce exfoliative toxins, primarily affecting neonates and children.

Perioral Erythema in SSSS

Redness of the skin around the mouth that spreads across the body within 2 days.

Blister Formation and Desquamation in SSSS

The formation of cutaneous blisters followed by the shedding of the epithelium.

Positive Nikolsky Sign

Indicates that the outer layer of skin easily peels off with slight friction.

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Bacteria in SSSS blisters

SSSS is caused by toxins produced by the bacteria, not by the bacteria itself.

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SSSS Healing Time

The typical healing time for SSSS after antibodies against the toxin appear.

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Study Notes

  • Staphylococcal Scalded Skin Syndrome (SSSS), also known as Ritter Disease, arises from Staphylococcus aureus strains producing exfoliative toxins.
  • Primarily affects neonates and children.
  • Initial symptom is perioral erythema, which spreads across the body within 2 days.
  • Cutaneous blisters then develop, leading to epithelial desquamation.
  • Blisters are free of bacteria.
  • Positive Nikolsky sign is observed.
  • Recovery occurs in 7-10 days with the emergence of antitoxin antibodies.
  • Mortality rate is low in neonates and young children, remaining below 5%.
  • Immunocompromised adults face a higher mortality rate of 60%.

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