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Questions and Answers
A child presents with honey-colored crusts on their face. Which of the following is the most likely cause of this condition?
A child presents with honey-colored crusts on their face. Which of the following is the most likely cause of this condition?
- Staphylococcus aureus producing exfoliative toxins
- Streptococcus pyogenes or a mix with Staphylococcus aureus (correct)
- Allergic reaction to insect bites
- Fungal infection due to heat and humidity
Which factor is least likely to contribute to an outbreak of epidemic impetigo among children?
Which factor is least likely to contribute to an outbreak of epidemic impetigo among children?
- Maintaining good personal hygiene (correct)
- Sharing clothes and towels with infected individuals
- Living in overcrowded conditions
- Exposure to high heat and humidity
A patient is diagnosed with bullous impetigo. Which of the following characteristics primarily differentiates this condition from non-bullous impetigo?
A patient is diagnosed with bullous impetigo. Which of the following characteristics primarily differentiates this condition from non-bullous impetigo?
- Occurrence mainly in adults
- Association with Streptococcus pyogenes
- Formation of fluid-filled bullae (correct)
- Presence of honey-colored crusts
Which treatment approach is most appropriate for a mild case of bullous impetigo?
Which treatment approach is most appropriate for a mild case of bullous impetigo?
Which of the following is the most significant risk associated with impetigo caused by nephritogenic strains of Streptococcus pyogenes?
Which of the following is the most significant risk associated with impetigo caused by nephritogenic strains of Streptococcus pyogenes?
A daycare center is experiencing an outbreak of impetigo. What measure would be least effective in controlling the spread of the infection?
A daycare center is experiencing an outbreak of impetigo. What measure would be least effective in controlling the spread of the infection?
A culture from a patient with bullous impetigo is positive. This finding indicates what about the condition?
A culture from a patient with bullous impetigo is positive. This finding indicates what about the condition?
Why are infants with bullous impetigo often treated with systemic antibiotics rather than topical treatments?
Why are infants with bullous impetigo often treated with systemic antibiotics rather than topical treatments?
Which of the following is the most important preventative measure to minimize the spread of impetigo?
Which of the following is the most important preventative measure to minimize the spread of impetigo?
A patient presents with impetigo. After successful treatment, what advice should be given to prevent recurrence?
A patient presents with impetigo. After successful treatment, what advice should be given to prevent recurrence?
Flashcards
Impetigo (Pyoderma)
Impetigo (Pyoderma)
A superficial skin infection that starts with a small vesicle that develops and ruptures, leading to skin erosion and honey-colored crusts.
Impetigo Cause
Impetigo Cause
Caused by Streptococcus pyogenes (group A strep) and/or Staphylococcus aureus.
Epidemic Impetigo factors
Epidemic Impetigo factors
Heat, humidity, poor hygiene and overcrowding.
Impetigo Treatment
Impetigo Treatment
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Bullous Impetigo
Bullous Impetigo
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Bullous Impetigo treatment
Bullous Impetigo treatment
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Fomites
Fomites
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Impetigo complication
Impetigo complication
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Study Notes
- Impetigo, also known as pyoderma, is a superficial skin infection.
- Begins as a small vesicle that ruptures and spreads, leading to skin erosion.
- Results in a serous exudate that dries into a honey-colored crust.
- Caused by Streptococcus pyogenes (group A streptococci), sometimes mixed with S. aureus.
- Honey-colored crusts are a key symptom.
- Highly contagious.
- May lead to acute glomerulonephritis if nephritogenic strains are involved.
Epidemic Impetigo
- Occurs in children, especially in conditions of heat, humidity, poor hygiene, and overcrowding.
- Spreads through fomites like shared clothes and towels.
- Treatment includes penicillins or cephalosporins.
- May lead to acute glomerulonephritis if nephritogenic strains of S. pyogenes are involved.
Bullous Impetigo
- Caused by Staphylococcus aureus producing exfoliative toxins.
- Most common in small children, but can occur at any age.
- Characterized by large, serum-filled bullae (blisters) filled with clear fluid.
- Highly contagious if the culture is positive.
- Treatment varies: topical or systemic antibiotics depending on severity.
- Minor infections can be treated with topical aminoglycosides, tetracyclines, macrolides, lincosamides, or mupirocin.
- Serious cases, especially in infants, usually require systemic antimicrobial treatment.
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